NzbDroneErrorPipeline: Invalid request Validation failed

[rafuz]

I am having problem getting results from Jackett

[Error] TorznabRssParser: An error occurred while processing feed item from NzbDrone.Core.Indexers.Exceptions.SizeParsingException: Unable to parse size from: Criminal Minds S12e12 [Mux - H264 - Ita Aac] DLmux - poliziesco, drammatico
  at NzbDrone.Core.Indexers.RssParser.ProcessItem (System.Xml.Linq.XElement item, NzbDrone.Core.Parser.Model.ReleaseInfo releaseInfo) [0x0005e] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Indexers\RssParser.cs:160 
  at NzbDrone.Core.Indexers.TorrentRssParser.ProcessItem (System.Xml.Linq.XElement item, NzbDrone.Core.Parser.Model.ReleaseInfo releaseInfo) [0x00000] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Indexers\TorrentRssParser.cs:37 
  at NzbDrone.Core.Indexers.Torznab.TorznabRssParser.ProcessItem (System.Xml.Linq.XElement item, NzbDrone.Core.Parser.Model.ReleaseInfo releaseInfo) [0x00000] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Indexers\Torznab\TorznabRssParser.cs:41 
  at NzbDrone.Core.Indexers.RssParser.ProcessItem (System.Xml.Linq.XElement item) [0x00007] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Indexers\RssParser.cs:138 
  at NzbDrone.Core.Indexers.RssParser.ParseResponse (NzbDrone.Core.Indexers.IndexerResponse indexerResponse) [0x00036] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\Indexers\RssParser.cs:62 
Close
[Warn] NzbDroneErrorPipeline: Invalid request Validation failed:
 -- No results were returned from your indexer, please check your settings.

The plugin in Jackett returns results correctly

[markus101]

[Error] TorznabRssParser: An error occurred while processing feed item from NzbDrone.Core.Indexers.Exceptions.SizeParsingException: Unable to parse size from: Criminal Minds S12e12 [Mux - H264 - Ita Aac] DLmux - poliziesco, drammatico

Either the size wasn’t provided by Jackett or provided in a way that Sonarr can’t parse.