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/

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

The variable 'ex' is declared but never used

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Possible null reference assignment.

Possible null reference assignment.

'VideoCallHub.Join(string)' hides inherited member 'BaseSignalRHub.Join(string)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'source' in 'IQueryable<int> Queryable.Distinct<int>(IQueryable<int> source)'.

Possible null reference argument for parameter 'source' in 'IQueryable<int> Queryable.Distinct<int>(IQueryable<int> source)'.