'Resource.MEMBERSHIP_BY_ACTIVITY' is obsolete: 'Unused once obsolete routes are removed'

Nullable value type may be null.

Nullable value type may be null.

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.

Possible null reference return.

Possible null reference return.

The result of the expression is always 'false' since a value of type 'int' is never equal to 'null' of type 'int?'

Possible null reference return.

Dereference of a possibly null reference.