Template variable error: 'None' has no attribute 'state'

Hi!

After updating HA to 2023.5.3 yesterday I get the errors below in /var/log/syslog.
This configuration has ben working for years.

Any insights into what has gone wrong & how to fix it?

sensors: !include sensors.yaml
#sensors.yaml
  - platform: command_line
    command: python3 -c "import requests; print(requests.get('https://fungerar.nu/renfors-temperature.today.txt').text.splitlines()[-1])"
    name: stuga_temperaturer
    unit_of_measurement: "°C"
  - platform: template
    sensors:
      stuga_temp_ute:
        value_template: "{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[1] | float | round(2) }}"
        friendly_name: 'Stugan Ute'
        device_class: temperature
        unit_of_measurement: "°C"
      stuga_temp_inne:
        value_template: "{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[2] | float | round(2) }}"
        friendly_name: 'Stugan Inne'
        device_class: temperature
        unit_of_measurement: "°C"
      stuga_temp_vatten:
        value_template: "{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[3] | float | round(2) }}"
        friendly_name: 'Stugan Vatten'
        device_class: temperature
        unit_of_measurement: "°C"
      stuga_temp_rpi_cpu:
        value_template: "{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[4] }}"
        friendly_name: 'Stugan RPi CPU'
        device_class: temperature
        unit_of_measurement: "°C"
      stuga_temp_rpi_gpu:
        value_template: "{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[5] }}"
        friendly_name: 'Stugan RPi GPU'
        device_class: temperature
        unit_of_measurement: "°C"

2023-05-22T13:49:13.113842+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.112 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[1] | float | round(2) }}'
2023-05-22T13:49:13.134177+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.127 ERROR (MainThread) [homeassistant.helpers.event] Error while processing template: Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[1] | float | round(2) }}) renders=2>
2023-05-22T13:49:13.134602+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.134874+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 544, in async_render
2023-05-22T13:49:13.135140+00:00 rpi4 hass[1827670]:     render_result = _render_with_context(self.template, compiled, **kwargs)
2023-05-22T13:49:13.135338+00:00 rpi4 hass[1827670]:                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.135526+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2164, in _render_with_context
2023-05-22T13:49:13.135709+00:00 rpi4 hass[1827670]:     return template.render(**kwargs)
2023-05-22T13:49:13.135903+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.136095+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 1301, in render
2023-05-22T13:49:13.136317+00:00 rpi4 hass[1827670]:     self.environment.handle_exception()
2023-05-22T13:49:13.136515+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 936, in handle_exception
2023-05-22T13:49:13.136733+00:00 rpi4 hass[1827670]:     raise rewrite_traceback_stack(source=source)
2023-05-22T13:49:13.136923+00:00 rpi4 hass[1827670]:   File "<template>", line 1, in top-level template code
2023-05-22T13:49:13.137108+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/sandbox.py", line 326, in getattr
2023-05-22T13:49:13.137357+00:00 rpi4 hass[1827670]:     value = getattr(obj, attribute)
2023-05-22T13:49:13.137544+00:00 rpi4 hass[1827670]:             ^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.137733+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2190, in _fail_with_undefined_error
2023-05-22T13:49:13.137920+00:00 rpi4 hass[1827670]:     raise ex
2023-05-22T13:49:13.138107+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2181, in _fail_with_undefined_error
2023-05-22T13:49:13.138295+00:00 rpi4 hass[1827670]:     return super()._fail_with_undefined_error(*args, **kwargs)
2023-05-22T13:49:13.138538+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.138728+00:00 rpi4 hass[1827670]: jinja2.exceptions.UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.138913+00:00 rpi4 hass[1827670]: The above exception was the direct cause of the following exception:
2023-05-22T13:49:13.139133+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.139318+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 665, in async_render_to_info
2023-05-22T13:49:13.139539+00:00 rpi4 hass[1827670]:     render_info._result = self.async_render(variables, strict=strict, **kwargs)
2023-05-22T13:49:13.139830+00:00 rpi4 hass[1827670]:                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.140044+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 546, in async_render
2023-05-22T13:49:13.140308+00:00 rpi4 hass[1827670]:     raise TemplateError(err) from err
2023-05-22T13:49:13.140514+00:00 rpi4 hass[1827670]: homeassistant.exceptions.TemplateError: UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.141786+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.140 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[1] | float | round(2) }}'
2023-05-22T13:49:13.144975+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.143 ERROR (MainThread) [homeassistant.helpers.template_entity] TemplateError('UndefinedError: 'None' has no attribute 'state'') while processing template 'Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[1] | float | round(2) }}) renders=4>' for attribute '_attr_native_value' in entity 'sensor.stuga_temp_ute'
2023-05-22T13:49:13.150783+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.149 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[2] | float | round(2) }}'
2023-05-22T13:49:13.157655+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.152 ERROR (MainThread) [homeassistant.helpers.event] Error while processing template: Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[2] | float | round(2) }}) renders=2>
2023-05-22T13:49:13.158020+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.158240+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 544, in async_render
2023-05-22T13:49:13.158440+00:00 rpi4 hass[1827670]:     render_result = _render_with_context(self.template, compiled, **kwargs)
2023-05-22T13:49:13.158623+00:00 rpi4 hass[1827670]:                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.158806+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2164, in _render_with_context
2023-05-22T13:49:13.158989+00:00 rpi4 hass[1827670]:     return template.render(**kwargs)
2023-05-22T13:49:13.159171+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.159373+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 1301, in render
2023-05-22T13:49:13.159576+00:00 rpi4 hass[1827670]:     self.environment.handle_exception()
2023-05-22T13:49:13.159779+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 936, in handle_exception
2023-05-22T13:49:13.159969+00:00 rpi4 hass[1827670]:     raise rewrite_traceback_stack(source=source)
2023-05-22T13:49:13.160215+00:00 rpi4 hass[1827670]:   File "<template>", line 1, in top-level template code
2023-05-22T13:49:13.160410+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/sandbox.py", line 326, in getattr
2023-05-22T13:49:13.160598+00:00 rpi4 hass[1827670]:     value = getattr(obj, attribute)
2023-05-22T13:49:13.160783+00:00 rpi4 hass[1827670]:             ^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.160973+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2190, in _fail_with_undefined_error
2023-05-22T13:49:13.161206+00:00 rpi4 hass[1827670]:     raise ex
2023-05-22T13:49:13.161404+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2181, in _fail_with_undefined_error
2023-05-22T13:49:13.161596+00:00 rpi4 hass[1827670]:     return super()._fail_with_undefined_error(*args, **kwargs)
2023-05-22T13:49:13.161782+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.161967+00:00 rpi4 hass[1827670]: jinja2.exceptions.UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.162152+00:00 rpi4 hass[1827670]: The above exception was the direct cause of the following exception:
2023-05-22T13:49:13.162332+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.162524+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 665, in async_render_to_info
2023-05-22T13:49:13.162713+00:00 rpi4 hass[1827670]:     render_info._result = self.async_render(variables, strict=strict, **kwargs)
2023-05-22T13:49:13.162974+00:00 rpi4 hass[1827670]:                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.163181+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 546, in async_render
2023-05-22T13:49:13.163387+00:00 rpi4 hass[1827670]:     raise TemplateError(err) from err
2023-05-22T13:49:13.163587+00:00 rpi4 hass[1827670]: homeassistant.exceptions.TemplateError: UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.165358+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.164 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[2] | float | round(2) }}'
2023-05-22T13:49:13.167821+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.167 ERROR (MainThread) [homeassistant.helpers.template_entity] TemplateError('UndefinedError: 'None' has no attribute 'state'') while processing template 'Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[2] | float | round(2) }}) renders=4>' for attribute '_attr_native_value' in entity 'sensor.stuga_temp_inne'
2023-05-22T13:49:13.169746+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.169 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[3] | float | round(2) }}'
2023-05-22T13:49:13.172932+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.170 ERROR (MainThread) [homeassistant.helpers.event] Error while processing template: Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[3] | float | round(2) }}) renders=2>
2023-05-22T13:49:13.173223+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.173333+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 544, in async_render
2023-05-22T13:49:13.173411+00:00 rpi4 hass[1827670]:     render_result = _render_with_context(self.template, compiled, **kwargs)
2023-05-22T13:49:13.173487+00:00 rpi4 hass[1827670]:                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.173564+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2164, in _render_with_context
2023-05-22T13:49:13.173648+00:00 rpi4 hass[1827670]:     return template.render(**kwargs)
2023-05-22T13:49:13.173738+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.173824+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 1301, in render
2023-05-22T13:49:13.173907+00:00 rpi4 hass[1827670]:     self.environment.handle_exception()
2023-05-22T13:49:13.173990+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 936, in handle_exception
2023-05-22T13:49:13.174067+00:00 rpi4 hass[1827670]:     raise rewrite_traceback_stack(source=source)
2023-05-22T13:49:13.174146+00:00 rpi4 hass[1827670]:   File "<template>", line 1, in top-level template code
2023-05-22T13:49:13.174223+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/sandbox.py", line 326, in getattr
2023-05-22T13:49:13.174301+00:00 rpi4 hass[1827670]:     value = getattr(obj, attribute)
2023-05-22T13:49:13.174376+00:00 rpi4 hass[1827670]:             ^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.174454+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2190, in _fail_with_undefined_error
2023-05-22T13:49:13.174531+00:00 rpi4 hass[1827670]:     raise ex
2023-05-22T13:49:13.174648+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2181, in _fail_with_undefined_error
2023-05-22T13:49:13.174732+00:00 rpi4 hass[1827670]:     return super()._fail_with_undefined_error(*args, **kwargs)
2023-05-22T13:49:13.174811+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.174888+00:00 rpi4 hass[1827670]: jinja2.exceptions.UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.174967+00:00 rpi4 hass[1827670]: The above exception was the direct cause of the following exception:
2023-05-22T13:49:13.175055+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.175160+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 665, in async_render_to_info
2023-05-22T13:49:13.175243+00:00 rpi4 hass[1827670]:     render_info._result = self.async_render(variables, strict=strict, **kwargs)
2023-05-22T13:49:13.175374+00:00 rpi4 hass[1827670]:                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.175460+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 546, in async_render
2023-05-22T13:49:13.175542+00:00 rpi4 hass[1827670]:     raise TemplateError(err) from err
2023-05-22T13:49:13.175626+00:00 rpi4 hass[1827670]: homeassistant.exceptions.TemplateError: UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.177973+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.177 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[3] | float | round(2) }}'
2023-05-22T13:49:13.179646+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.179 ERROR (MainThread) [homeassistant.helpers.template_entity] TemplateError('UndefinedError: 'None' has no attribute 'state'') while processing template 'Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[3] | float | round(2) }}) renders=4>' for attribute '_attr_native_value' in entity 'sensor.stuga_temp_vatten'
2023-05-22T13:49:13.181440+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.180 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[4] }}'
2023-05-22T13:49:13.184483+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.182 ERROR (MainThread) [homeassistant.helpers.event] Error while processing template: Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[4] }}) renders=2>
2023-05-22T13:49:13.184682+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.184778+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 544, in async_render
2023-05-22T13:49:13.184860+00:00 rpi4 hass[1827670]:     render_result = _render_with_context(self.template, compiled, **kwargs)
2023-05-22T13:49:13.184934+00:00 rpi4 hass[1827670]:                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.185009+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2164, in _render_with_context
2023-05-22T13:49:13.185086+00:00 rpi4 hass[1827670]:     return template.render(**kwargs)
2023-05-22T13:49:13.185207+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.185351+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 1301, in render
2023-05-22T13:49:13.185444+00:00 rpi4 hass[1827670]:     self.environment.handle_exception()
2023-05-22T13:49:13.185524+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 936, in handle_exception
2023-05-22T13:49:13.185603+00:00 rpi4 hass[1827670]:     raise rewrite_traceback_stack(source=source)
2023-05-22T13:49:13.185682+00:00 rpi4 hass[1827670]:   File "<template>", line 1, in top-level template code
2023-05-22T13:49:13.185761+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/sandbox.py", line 326, in getattr
2023-05-22T13:49:13.185838+00:00 rpi4 hass[1827670]:     value = getattr(obj, attribute)
2023-05-22T13:49:13.185920+00:00 rpi4 hass[1827670]:             ^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.185996+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2190, in _fail_with_undefined_error
2023-05-22T13:49:13.186072+00:00 rpi4 hass[1827670]:     raise ex
2023-05-22T13:49:13.186147+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2181, in _fail_with_undefined_error
2023-05-22T13:49:13.186223+00:00 rpi4 hass[1827670]:     return super()._fail_with_undefined_error(*args, **kwargs)
2023-05-22T13:49:13.186300+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.186376+00:00 rpi4 hass[1827670]: jinja2.exceptions.UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.186454+00:00 rpi4 hass[1827670]: The above exception was the direct cause of the following exception:
2023-05-22T13:49:13.186532+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.186611+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 665, in async_render_to_info
2023-05-22T13:49:13.186684+00:00 rpi4 hass[1827670]:     render_info._result = self.async_render(variables, strict=strict, **kwargs)
2023-05-22T13:49:13.186810+00:00 rpi4 hass[1827670]:                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.186893+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 546, in async_render
2023-05-22T13:49:13.186966+00:00 rpi4 hass[1827670]:     raise TemplateError(err) from err
2023-05-22T13:49:13.187042+00:00 rpi4 hass[1827670]: homeassistant.exceptions.TemplateError: UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.188249+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.187 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[4] }}'
2023-05-22T13:49:13.189986+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.189 ERROR (MainThread) [homeassistant.helpers.template_entity] TemplateError('UndefinedError: 'None' has no attribute 'state'') while processing template 'Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[4] }}) renders=4>' for attribute '_attr_native_value' in entity 'sensor.stuga_temp_rpi_cpu'
2023-05-22T13:49:13.191758+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.191 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[5] }}'
2023-05-22T13:49:13.194814+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.192 ERROR (MainThread) [homeassistant.helpers.event] Error while processing template: Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[5] }}) renders=2>
2023-05-22T13:49:13.195033+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.195125+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 544, in async_render
2023-05-22T13:49:13.195201+00:00 rpi4 hass[1827670]:     render_result = _render_with_context(self.template, compiled, **kwargs)
2023-05-22T13:49:13.195277+00:00 rpi4 hass[1827670]:                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.195359+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2164, in _render_with_context
2023-05-22T13:49:13.195441+00:00 rpi4 hass[1827670]:     return template.render(**kwargs)
2023-05-22T13:49:13.195524+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.195609+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 1301, in render
2023-05-22T13:49:13.195691+00:00 rpi4 hass[1827670]:     self.environment.handle_exception()
2023-05-22T13:49:13.195769+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/environment.py", line 936, in handle_exception
2023-05-22T13:49:13.195846+00:00 rpi4 hass[1827670]:     raise rewrite_traceback_stack(source=source)
2023-05-22T13:49:13.195922+00:00 rpi4 hass[1827670]:   File "<template>", line 1, in top-level template code
2023-05-22T13:49:13.196001+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/jinja2/sandbox.py", line 326, in getattr
2023-05-22T13:49:13.196077+00:00 rpi4 hass[1827670]:     value = getattr(obj, attribute)
2023-05-22T13:49:13.196151+00:00 rpi4 hass[1827670]:             ^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.196252+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2190, in _fail_with_undefined_error
2023-05-22T13:49:13.196332+00:00 rpi4 hass[1827670]:     raise ex
2023-05-22T13:49:13.196411+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 2181, in _fail_with_undefined_error
2023-05-22T13:49:13.196488+00:00 rpi4 hass[1827670]:     return super()._fail_with_undefined_error(*args, **kwargs)
2023-05-22T13:49:13.196600+00:00 rpi4 hass[1827670]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.196681+00:00 rpi4 hass[1827670]: jinja2.exceptions.UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.196757+00:00 rpi4 hass[1827670]: The above exception was the direct cause of the following exception:
2023-05-22T13:49:13.196840+00:00 rpi4 hass[1827670]: Traceback (most recent call last):
2023-05-22T13:49:13.196916+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 665, in async_render_to_info
2023-05-22T13:49:13.196992+00:00 rpi4 hass[1827670]:     render_info._result = self.async_render(variables, strict=strict, **kwargs)
2023-05-22T13:49:13.197157+00:00 rpi4 hass[1827670]:                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-22T13:49:13.197271+00:00 rpi4 hass[1827670]:   File "/home/peje/.local/lib/python3.11/site-packages/homeassistant/helpers/template.py", line 546, in async_render
2023-05-22T13:49:13.197358+00:00 rpi4 hass[1827670]:     raise TemplateError(err) from err
2023-05-22T13:49:13.197443+00:00 rpi4 hass[1827670]: homeassistant.exceptions.TemplateError: UndefinedError: 'None' has no attribute 'state'
2023-05-22T13:49:13.198407+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.197 ERROR (MainThread) [homeassistant.helpers.template] Template variable error: 'None' has no attribute 'state' when rendering '{% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[5] }}'
2023-05-22T13:49:13.199987+00:00 rpi4 hass[1827670]: 2023-05-22 13:49:13.199 ERROR (MainThread) [homeassistant.helpers.template_entity] TemplateError('UndefinedError: 'None' has no attribute 'state'') while processing template 'Template<template=({% set list = states.sensor.stuga_temperaturer.state.split(',') %} {{ list[5] }}) renders=4>' for attribute '_attr_native_value' in entity 'sensor.stuga_temp_rpi_gpu'

/Peje

Template have there own Domain now

template:
  -  sensor:
    - name: Robo Vacuum Bin
      unique_id: 848ac3a3-7b0f-4bf8-9bb3-43b1070637cd
      state: >
        {{ states('input_select.vacuum_bin') }}
   ....
 - binary_sensor:
      - unique_id: c4ed079d-c304-42d5-93ed-0ca3c23756ef
          name: "Sensor: Jug Hot"
          state: "{{states('switch.kettle_power') }}"
- trigger:
  - platform: state
    entity_id: binary_sensor.mr2
  sensor:
    - unique_id: mr2_car
      name: "MR2 car {{ ' (offline)' if trigger.to_state.state == 'unavailable' else '' }}"
      icon: mdi:car
      state: >
        {% set pm10 = states('binary_sensor.mr2') %}
        {{ pm10 if trigger.to_state.state != 'unavailable' else 'Away' }}     
  ....

your home work

I got it to work, rewriting my sensors.
Thanks for the pointers!

/Peje