Added error message and handling for non-starting connectors over HTTP.
Added error message and handling for non-starting connectors over HTTP.

rbouqueau/mistserver,DDVTECH/mistserver,DDVTECH/mistserver,DDVTECH/mistserver,rbouqueau/mistserver,rbouqueau/mistserver,rbouqueau/mistserver,DDVTECH/mistserver,DDVTECH/mistserver,rbouqueau/mistserver