The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/setup-dotnet@v1, actions/upload-artifact@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

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

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

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

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

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

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

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

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

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