The process '/usr/bin/xcrun' failed with exit code 1

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

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

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

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

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.