Forecast is missing.

[bakboord4]

Describe the bug
TypeError: undefined is not an object (evaluating 'forecast[3].datetime') drawChart.

For Safari on macOS, IO and /iPadOS.
Error introduced with version 2.3.0

To Reproduce
Just show the chart on screen.

Expected behavior
Return of forecast.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• WEATHER-CHART-CARD VERSION: V2.3.0
• HA 2024.2.2
• OS: 11.5
• Browser Safari
• Version 17.3.1

Additional context

Add any other context about the problem here.
Logger: frontend.js.latest.202402071
Source: components/system_log/init.py:306
First occurred: 17 februari 2024 om 16:00:09 (11 occurrences)
Last logged: 11:57:38

Uncaught error from Safari 17.3.1 on Mac OS 10.15.7 TypeError: undefined is not an object (evaluating 'forecast[3].datetime') drawChart (/hacsfiles/weather-chart-card/weather-chart-card.js:17964:27) callback (/hacsfiles/weather-chart-card/weather-chart-card.js:17750:19) message (node_modules/home-assistant-js-websocket/dist/connection.js:23:42) forEach ([native code]::) forEach (node_modules/home-assistant-js-websocket/dist/connection.js:15:25)

Uncaught error from WebKit 605.1.15 on Mac OS 10.15.7 TypeError: undefined is not an object (evaluating 'forecast[3].datetime') drawChart (/hacsfiles/weather-chart-card/weather-chart-card.js:17964:27) callback (/hacsfiles/weather-chart-card/weather-chart-card.js:17750:19) message (node_modules/home-assistant-js-websocket/dist/connection.js:23:42) forEach ([native code]::) forEach (node_modules/home-assistant-js-websocket/dist/connection.js:15:25)

Uncaught error from WebKit 605.1.15 on iOS 17.3.1 TypeError: undefined is not an object (evaluating 'forecast[3].datetime') drawChart (/hacsfiles/weather-chart-card/weather-chart-card.js:17964:27) callback (/hacsfiles/weather-chart-card/weather-chart-card.js:17750:19) message (node_modules/home-assistant-js-websocket/dist/connection.js:23:42) forEach ([native code]::) forEach (node_modules/home-assistant-js-websocket/dist/connection.js:15:25)

Uncaught error from Safari 17.3 on Mac OS 10.15.7 TypeError: undefined is not an object (evaluating 'forecast[3].datetime') drawChart (/hacsfiles/weather-chart-card/weather-chart-card.js:17964:27) callback (/hacsfiles/weather-chart-card/weather-chart-card.js:17750:19) message (node_modules/home-assistant-js-websocket/dist/connection.js:23:42) forEach ([native code]::) forEach (node_modules/home-assistant-js-websocket/dist/connection.js:15:25)

[mlamberts78]

Hello, can you provide output of the weather data?
Developer tools - services - Get weather forecast.

and which weather integration are you using?

[bakboord4]

@mlamberts78
Weather integration is: KNMI
Requested output.

weather.knmi_casa:
forecast:
- datetime: "2024-02-17T23:00:00+00:00"
condition: cloudy
templow: 8
temperature: 10
precipitation_probability: 0
wind_bearing: 225
wind_speed: 19
wind_speed_bft: 3
sun_chance: 24
- datetime: "2024-02-18T23:00:00+00:00"
condition: pouring
templow: 7
temperature: 10
precipitation_probability: 80
wind_bearing: 270
wind_speed: 15
wind_speed_bft: 3
sun_chance: 20
- datetime: "2024-02-19T23:00:00+00:00"
condition: rainy
templow: 4
temperature: 11
precipitation_probability: 40
wind_bearing: 225
wind_speed: 15
wind_speed_bft: 3
sun_chance: 20

[mlamberts78]

Thanks, I know the root cause (knmi data has only 3 days forecast) and wil implement a fix in the next release. V2.2.9 should work for you for the time being… ( via HACS choose redownload and select older version)

[bakboord4]

@mlamberts78
Thanks for the temp. fix. Forecast is back again.
Looking forward to the new release.

[bakboord4]

@mlamberts78
You may have already seen it.
See golles/ha-knmi#120, chapter weather where is mentioned: 5 day forecast and hourly forecast. May be of influence on your fix.