add the exception message to mirrorutilityexception

Author: FaithBeam

Stalker.Gamma/Utilities/MirrorUtility.cs

@@ -47,6 +47,7 @@ Try again later.
                 $"""
                 Error getting mirror
                 Mirror URL: {mirrorUrl}
+                Exception Message: {e.Message}
                 """,
                 e
             );