No Default question for Google Emails

Hi

Im starting to go through all my logs and fix the no default before it kicks in on 2022.1

Ive sorted some as_timestamps and strptime issues but I have this entity below that I use to extract from google calendar. Its my rugby teams fixtures. This has worked putting at end of the as_timestamp ,0,0) and stopped it appearing in the logs as an error warning.

{% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %}

Currently its out of season, so no fixtures but 2 things. 1 how can I make it show blanks when no data and number 2, how can I get rid of the errors on this.

Thank you

2021-11-30 06:49:56 WARNING (MainThread) [homeassistant.helpers.template] Template warning: 'timestamp_custom' got invalid input '0' when rendering template '{%- macro ordinal(num) %} {%- set d = {1:'st',2:'nd',3:'rd'} %} {%- set num = num | int %} {%- if 10 < num % 100 <= 20 %}
  {{- num }}th
{%- else %}
  {{- num }}{{ d.get(num % 10, 'th') }}
{%- endif %} {%- endmacro %} {% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %} {% set day = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom('%A ' ) %} {% set end = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %B %Y') %} {{ (day) ~ ordinal(d) ~ end }}' but no default was specified. Currently 'timestamp_custom' will return '0', however this template will fail to render in Home Assistant core 2022.1
2021-11-30 06:49:56 WARNING (MainThread) [homeassistant.helpers.template] Template warning: 'timestamp_custom' got invalid input '0' when rendering template '{%- macro ordinal(num) %} {%- set d = {1:'st',2:'nd',3:'rd'} %} {%- set num = num | int %} {%- if 10 < num % 100 <= 20 %}
  {{- num }}th
{%- else %}
  {{- num }}{{ d.get(num % 10, 'th') }}
{%- endif %} {%- endmacro %} {% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %} {% set day = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom('%A ' ) %} {% set end = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %B %Y') %} {{ (day) ~ ordinal(d) ~ end }}' but no default was specified. Currently 'timestamp_custom' will return '0', however this template will fail to render in Home Assistant core 2022.1
2021-11-30 06:49:56 WARNING (MainThread) [homeassistant.helpers.template] Template warning: 'timestamp_custom' got invalid input '0' when rendering template '{%- macro ordinal(num) %} {%- set d = {1:'st',2:'nd',3:'rd'} %} {%- set num = num | int %} {%- if 10 < num % 100 <= 20 %}
  {{- num }}th
{%- else %}
  {{- num }}{{ d.get(num % 10, 'th') }}
{%- endif %} {%- endmacro %} {% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %} {% set day = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom('%A ' ) %} {% set end = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %B %Y') %} {{ (day) ~ ordinal(d) ~ end }}' but no default was specified. Currently 'timestamp_custom' will return '0', however this template will fail to render in Home Assistant core 2022.1
2021-11-30 06:49:56 WARNING (MainThread) [homeassistant.helpers.template] Template warning: 'timestamp_custom' got invalid input '0' when rendering template '{%- macro ordinal(num) %} {%- set d = {1:'st',2:'nd',3:'rd'} %} {%- set num = num | int %} {%- if 10 < num % 100 <= 20 %}
  {{- num }}th
{%- else %}
  {{- num }}{{ d.get(num % 10, 'th') }}
{%- endif %} {%- endmacro %} {% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %} {% set day = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom('%A ' ) %} {% set end = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %B %Y') %} {{ (day) ~ ordinal(d) ~ end }}' but no default was specified. Currently 'timestamp_custom' will return '0', however this template will fail to render in Home Assistant core 2022.1
2021-11-30 06:49:56 WARNING (MainThread) [homeassistant.helpers.template] Template warning: 'timestamp_custom' got invalid input '0' when rendering template '{%- macro ordinal(num) %} {%- set d = {1:'st',2:'nd',3:'rd'} %} {%- set num = num | int %} {%- if 10 < num % 100 <= 20 %}
  {{- num }}th
{%- else %}
  {{- num }}{{ d.get(num % 10, 'th') }}
{%- endif %} {%- endmacro %} {% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %} {% set day = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom('%A ' ) %} {% set end = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %B %Y') %} {{ (day) ~ ordinal(d) ~ end }}' but no default was specified. Currently 'timestamp_custom' will return '0', however this template will fail to render in Home Assistant core 2022.1

Below are the entities pulling the info from google calendar

# Leeds Rhinos Fixtures
- platform: template
  sensors:
    rhinos_next_game:
      value_template: "{{ states.calendar.leeds_rugby.attributes.message }}"
      friendly_name: "Next Up"

- platform: template
  sensors:
    rhinos_next_game_location:
      value_template: "{{ states.calendar.leeds_rugby.attributes.location }}"
      friendly_name: "Venue"


- platform: template
  sensors:
    rhinos_next_game_date:
      value_template: >
        {%- macro ordinal(num) %}
        {%- set d = {1:'st',2:'nd',3:'rd'} %}
        {%- set num = num | int %}
        {%- if 10 < num % 100 <= 20 %}
          {{- num }}th
        {%- else %}
          {{- num }}{{ d.get(num % 10, 'th') }}
        {%- endif %}
        {%- endmacro %}
        {% set d = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %d') %}
        {% set day = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom('%A ' ) %}
        {% set end = as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'0') | timestamp_custom(' %B %Y') %}
        {{ (day) ~ ordinal(d) ~ end }}
      friendly_name: "Game Day"
      

- platform: template
  sensors:
    rhinos_next_game_kickoff:
      value_template: "{{ as_timestamp(strptime(state_attr('calendar.leeds_rugby', 'start_time'), '%Y-%m-%d %H:%M:%S',0),'N/A') | timestamp_custom('%H:%M') }}"
      friendly_name: "Kick Off"

- platform: template
  sensors:
    rhinos_next_game_countdown:
      friendly_name: Days to Go
      value_template: >
        {% set daystogo = strptime(states.calendar.leeds_rugby.attributes.start_time, "%Y-%m-%d %H:%M:%S",0).strftime("%A") %}
        {% set daystogo2 = strptime(states.calendar.leeds_rugby.attributes.start_time, "%Y-%m-%d %H:%M:%S",0).strftime("%b %d, %Y") %}
        {% if as_timestamp(states.calendar.leeds_rugby.attributes.start_time) / 86400 - as_timestamp(as_timestamp(states.sensor.time.last_updated) | timestamp_custom("%Y-%m-%d 00:00:00",true)) / 86400 == 0.0 %}
        TODAY
        {% elif as_timestamp(states.calendar.leeds_rugby.attributes.start_time) / 86400 - as_timestamp(as_timestamp(states.sensor.time.last_updated) | timestamp_custom("%Y-%m-%d 00:00:00",true)) / 86400 == 1.0 %}
        TOMORROW
        {% elif as_timestamp(states.calendar.leeds_rugby.attributes.start_time) / 86400 - as_timestamp(as_timestamp(states.sensor.time.last_updated) | timestamp_custom("%Y-%m-%d 00:00:00",true)) / 86400 >= 7.0 %}
        {{ (as_timestamp(states.calendar.leeds_rugby.attributes.start_time) / 86400 + 1 - as_timestamp(states.sensor.time.last_updated) / 86400) | int  }} days
        {% elif as_timestamp(states.calendar.leeds_rugby.attributes.start_time) / 86400 - as_timestamp(as_timestamp(states.sensor.time.last_updated) | timestamp_custom("%Y-%m-%d 00:00:00",true)) / 86400 >= 2.0 %}
        {{ daystogo }}
        {% else %}
        {{ daystogo if "Unknown" != None else " " }}
        {% endif %}

Thank you