'ExamSlot' does not contain a definition for 'CourseId' and no accessible extension method 'CourseId' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

There is no argument given that corresponds to the required parameter 'language' of 'ExamSlotDTO.ExamSlotDTO(ExamSlot, LanguageLevel, string, int, int)'

'ExamSlot' does not contain a definition for 'ExamDateTime' and no accessible extension method 'ExamDateTime' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'ExamDateTime' and no accessible extension method 'ExamDateTime' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'CourseId' and no accessible extension method 'CourseId' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'NumberOfStudents' and no accessible extension method 'NumberOfStudents' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'ExamDateTime' and no accessible extension method 'ExamDateTime' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'CourseId' and no accessible extension method 'CourseId' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'CourseId' and no accessible extension method 'CourseId' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

'ExamSlot' does not contain a definition for 'CourseId' and no accessible extension method 'CourseId' accepting a first argument of type 'ExamSlot' could be found (are you missing a using directive or an assembly reference?)

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'.

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

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

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

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

Possible null reference argument for parameter 'student' in 'List<ExamSlot> StudentController.GetAvailableExamSlots(Student student, CourseController courseController, ExamSlotController examSlotController, EnrollmentRequestController enrollmentRequestController)'.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

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