Log invalid config file exceptions

(cherry picked from commit a95317446c452926819ad24f892a00770b1b23fc)

Closes #3618

src/NzbDrone.Host/Bootstrap.cs

@@ -23,8 +23,6 @@ using NzbDrone.Common.Instrumentation;
 using NzbDrone.Common.Instrumentation.Extensions;
 using NzbDrone.Core.Configuration;
 using NzbDrone.Core.Datastore.Extensions;
-
-using NzbDrone.Host;
 using PostgresOptions = NzbDrone.Core.Datastore.PostgresOptions;
 
 namespace NzbDrone.Host
@@ -223,6 +221,8 @@ namespace NzbDrone.Host
             }
             catch (InvalidDataException ex)
             {
+                Logger.Error(ex, ex.Message);
+
                 throw new InvalidConfigFileException($"{configPath} is corrupt or invalid. Please delete the config file and Lidarr will recreate it.", ex);
             }
         }