Dereference of a possibly null reference.

Possible null reference argument for parameter 'groupName' in 'List<string> GroupService.GetConnectionsByGroup(string groupName)'.

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

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

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

Using member 'Microsoft.Extensions.DependencyInjection.SignalRDependencyInjectionExtensions.AddSignalR(IServiceCollection)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. SignalR does not currently support trimming or native AOT. https://aka.ms/aspnet/trimming

Suggest using top level route registrations instead of UseEndpoints (https://aka.ms/aspnet/analyzers)

Dereference of a possibly null reference.

Possible null reference argument for parameter 'groupName' in 'List<string> GroupService.GetConnectionsByGroup(string groupName)'.

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

The "--output" option isn't supported when building a solution. Specifying a solution-level output path results in all projects copying outputs to the same directory, which can lead to inconsistent builds.

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

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

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

Dereference of a possibly null reference.

Possible null reference argument for parameter 'groupName' in 'List<string> GroupService.GetConnectionsByGroup(string groupName)'.

Using member 'Microsoft.Extensions.DependencyInjection.SignalRDependencyInjectionExtensions.AddSignalR(IServiceCollection)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. SignalR does not currently support trimming or native AOT. https://aka.ms/aspnet/trimming