Here is what openweather api says about 401 errors received:
You can get the error 401 in the following cases:
- You did not specify your API key in API request.
- Your API key is not activated yet. Within the next couple of hours, it will be activated and ready to use.
- You are using wrong API key in API request. Please, check your right API key in personal account.
- You are using a Free subscription and try requesting data available in other subscriptions . For example, 16 days/daily forecast API, any historical weather data, Weather maps 2.0, etc). Please, check your subscription in your personal account.