Possible null reference argument for parameter 'connectionString' in 'DbContextOptionsBuilder CosmosDbContextOptionsExtensions.UseCosmos(DbContextOptionsBuilder optionsBuilder, string connectionString, string databaseName, Action<CosmosDbContextOptionsBuilder>? cosmosOptionsAction = null)'.

Possible null reference return.

Possible null reference return.

Non-nullable property 'LastModified' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Nullable value type may be null.

Possible null reference argument for parameter 'source' in 'IEnumerable<OrcanodeEvent> Enumerable.Where<OrcanodeEvent>(IEnumerable<OrcanodeEvent> source, Func<OrcanodeEvent, bool> predicate)'.

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.

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

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