The job was canceled because "macos-latest" failed.

The operation was canceled.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Possible null reference argument for parameter 'learningContent' in 'LearningElementPe.LearningElementPe(string name, ILearningContentPe learningContent, string description, string goals, LearningElementDifficultyEnum difficulty, ElementModel elementModel, int workload = 0, int points = 1, double positionX = 0, double positionY = 0)'.

'MockedRequestExtensions.Respond(MockedRequest, HttpResponseMessage)' is obsolete: 'Using this overload is not recommended. Instead, use Respond(req => new HttpResponseMessage(...))'

'MockedRequestExtensions.Respond(MockedRequest, HttpResponseMessage)' is obsolete: 'Using this overload is not recommended. Instead, use Respond(req => new HttpResponseMessage(...))'

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.

Non-nullable property 'StoryEle1' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'StoryEle2' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Ele1' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.