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/.

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

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

'Course.ToString()' hides inherited member 'object.ToString()'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

Non-nullable field 'name' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'lastName' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'email' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'password' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'profession' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'phoneNumber' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.