Error: Symbol Not Found Error when installing WF

OK. thanx

I'll try this

    function getInitialView() as Array<Views or InputDelegates>? {
		if (System has :ServiceDelegate && Background has :registerForTemporalEvent) {
			Background.registerForTemporalEvent(new Time.Duration(600));
		}
       	return [new QuatroView()];
    }

and this

	function onTemporalEvent() as Void {
		if (Properties.getValue("WeatherProvider") != 0) {
			Background.exit({});
			return;
		}
		var weatherUpdated = Storage.getValue("weatherUpdated");
		if (weatherUpdated != null || weatherUpdated >= Time.now().value() - 3600) {
			Background.exit({});
			return;
		}

Not sure why you need the "if" starting at line 6 in onTemporalEvent.  You can get the time stamp from the OWM data JSON Data.  "dt" is the unix time

Every time I receive data from the server I save a timestamp in weatherUpdated.

	function onBackgroundData(data) {
		// if (Properties.getValue("WeatherProvider") != 0) { return; }
		if ((data != null) && data.hasKey("cod") && (data["cod"] == 200)) {
			Storage.setValue("weatherUpdated", Time.now().value());
......

If everything has been updated, I need to call the server next time only in an hour.
Otherwise there will be too many requests for a free account

I use a free OWM account and have no issue with exceeding my limit for requests (free account)  By default I request data every 15 minutes.

I think you are making things far more complex than needed.

I'm doing almost exactly as you wrote.

	function onReceive(responseCode, data) as Void {
		if (responseCode == 200) {
			Background.exit(data);
		} else {
			Background.exit({"cod" => responseCode});
		}
	}

but if the limit is exceeded, the OWM returns responseCode = 200, but cod = 429

I encountered the problem of exceeding the limit in the Quattro watchface.
first I set the default value of weather to OWM. and it turned out to be a mistake.
after the correction, the limit was still exceeded due to more than 2k installations per day.

Have users get their own OWM key, as the free one will get exceeded if you only have a small number of users.  If it's popular, you'll get a bunch of complaints from users. 

A key per user is what I do with any app that uses OWM.

Do you still experience the crash on installation? Because I had the same problem!

Also, when I start the simulator, sometimes it says "app crashed", but the watchface is still running fine in the sim, but there are no logs written. Starting the simulator a second time works without issues. Do you have something similar? 

No. Although I like the solution better, it didn't help.
The new version of the application has been tested. I updated it. There are no errors.
But when I deleted it and put it back on, I saw IQ!
The CIQ_LOG.YML file has appeared in the LOGS directory:

---
Error: File Not Found Error
Details: 'Failed invoking <symbol>'
Time: 2022-06-06T19:56:31Z
Part-Number: 006-B3907-00
Firmware-Version: '8.35'
Language-Code: eng
ConnectIQ-Version: 4.1.3

Now it contains up-to-date data, but they don't even have the name of the application that caused the error.

And the error has changed

Yes. I also did this when I received a bunch of complaints from users and a blocked OWM account