Error with template coding

Configuration
21

Are you using .state anywhere?
like this

states.sensor.temperature.state Literally just worked through this yesterday with another person.

22

I think at this point, you’re looking at old errors. Either that or it’s a new one. The template I provided above will work, copy/paste, without error.

So post the new error or copy/paste the template above. Remember to wrap it in double quotes if your interior quotes are single (if you copy the template I provided).

23

Hi @petro ,
I am facing an (IMHO) similar error

  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 2332, in _render_with_context
    return template.render(**kwargs)

that is new since the last update to 2024.2.1 and arising from

sensor:
  - name: davis_vantage_pro_curr
    platform: rest
    resource: "http://192.168.90.146/v1/current_conditions"
    json_attributes:
      - data
    value_template: "Vantage Pro"
  - platform: template
    sensors:
      temp:
        friendly_name: "Temperatur"
        device_class: temperature
        unit_of_measurement: "°F"
        value_template: '{{ state_attr("sensor.davis_vantage_pro_curr", "data")["conditions"][0]["temp"] | round(2)}}'

As it worked before, and I am new, I have absolutely no idea, what is wrong. Except the update, I changed nothing.

thanks
Juergen

24

You’ll have to post the full error

25

Hi @petro,
sorry I wanted to keep it short. And again (as often), it was a different story: My wife plugged out the “davis_vantage_pro_curr” wifi connection, so there was no data.
(Took me 2 hours to find out, and got a “ohh sorry” :slight_smile: )
But this arises the question: How do I have to configure the vantage, to get no such errors, if the device is not reachable, and instead I get “something” that the weather station is “off”. I see this automatically done with my e.g. shelly, but there I did no template configuration on my own, there are just the defaults from HA. I did not find the config, so I could not “steal” from there.

thanks
Juergen

26 
Logger: homeassistant.helpers.event
Source: helpers/template.py:574
First occurred: 18:45:51 (1 occurrences)
Last logged: 18:45:51

Error while processing template: Template<template=({{ state_attr(entity, "distance") | round(1, 0) }} Mi) renders=66>
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 1656, in forgiving_round
    value = round(float(value), precision)
                  ^^^^^^^^^^^^
TypeError: float() argument must be a string or a real number, not 'NoneType'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 572, in async_render
    render_result = _render_with_context(self.template, compiled, **kwargs)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 2332, in _render_with_context
    return template.render(**kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/jinja2/environment.py", line 1301, in render
    self.environment.handle_exception()
  File "/usr/local/lib/python3.12/site-packages/jinja2/environment.py", line 936, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "<template>", line 1, in top-level template code
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 1661, in forgiving_round
    raise_no_default("round", value)
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 1637, in raise_no_default
    raise ValueError(
ValueError: Template error: round got invalid input 'None' when rendering template '{{ state_attr(entity, "distance") | round(1, 0) }} Mi' but no default was specified

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 698, in async_render_to_info
    render_info._result = self.async_render(
                          ^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 574, in async_render
    raise TemplateError(err) from err
homeassistant.exceptions.TemplateError: ValueError: Template error: round got invalid input 'None' when rendering template '{{ state_attr(entity, "distance") | round(1, 0) }} Mi' but no default was specified

Pulling this error now, didn’t have any issues until recently, sorry not great with templating

27

Change round(1,0) to round(1, default=0)

I forgot the 2nd argument is for ceiling/floor rounding methods.

1 Like
28

@petro makes a great point. I had to not just clear, but wipe my log entries to make the old code errors go away. I should have mentioned that.

29

That actually fixed it, thanks!

Any idea what’s creating this new error though :woozy_face:

Logger: frontend.js.latest.202402071
Source: components/system_log/__init__.py:306
First occurred: 21:37:33 (1 occurrences)
Last logged: 21:37:33

Uncaught error from WebKit 605.1.15 on iOS 17.3 TypeError: null is not an object (evaluating 'current_config.background') removeDefaultBackground (/hacsfiles/lovelace-animated-background/animated-background.js:533:21) /hacsfiles/lovelace-animated-background/animated-background.js:572:36
1 Like
30

I wish I would have had that round info 2 days ago, was driving me insane. :exploding_head: I just eliminated them. Thanks for the update!!

1 Like