Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-dotnet@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The type name 'init' only contains lower-cased ascii characters. Such names may become reserved for the language.

The type name 'init' only contains lower-cased ascii characters. Such names may become reserved for the language.

Nullability of reference types in return type of 'PenaltyPoint? PenaltyPointRepository.Get(int id)' doesn't match implicitly implemented member 'PenaltyPoint IPenaltyPointRepository.Get(int id)' (possibly because of nullability attributes).

Nullability of reference types in return type of 'ExamSlot? ExamSlotRepository.Get(int id)' doesn't match implicitly implemented member 'ExamSlot IExamSlotRepository.Get(int id)' (possibly because of nullability attributes).

Nullability of reference types in type of 'event PropertyChangedEventHandler CourseViewModel.PropertyChanged' doesn't match implicitly implemented member 'event PropertyChangedEventHandler? INotifyPropertyChanged.PropertyChanged'.

Nullability of reference types in type of 'event PropertyChangedEventHandler LanguageLevelViewModel.PropertyChanged' doesn't match implicitly implemented member 'event PropertyChangedEventHandler? INotifyPropertyChanged.PropertyChanged'.

Nullability of reference types in type of 'event PropertyChangedEventHandler TutorViewModel.PropertyChanged' doesn't match implicitly implemented member 'event PropertyChangedEventHandler? INotifyPropertyChanged.PropertyChanged'.

'InputPopupWindow.TextInput' hides inherited member 'UIElement.TextInput'. Use the new keyword if hiding was intended.

Possible null reference argument for parameter 'serviceProvider' in 'void Injector.SetServiceProvider(ServiceProvider serviceProvider)'.