Postprocessing error

Also been getting unrar issues but nothing wrong with archives. unrar is installed, etc.

2020-05-05 23:12:26 INFO::POSTPROCESSORQUEUE-AUTO::ozark.s03e05.internal.multi.1080p.web.x264-cielos.rar : Unpacking failed: Unpacking Failed with Invalid Rar Archive Usage. Is unrar installed and on the system PATH? 2020-05-05 23:12:26 INFO::POSTPROCESSORQUEUE-AUTO::Some items were not processed. 2020-05-05 23:12:26 INFO::POSTPROCESSORQUEUE-AUTO::Successfully processed 2020-05-05 23:12:25 WARNING::POSTPROCESSORQUEUE-AUTO::Failed to extract the archive ozark.s03e05.internal.multi.1080p.web.x264-cielos.rar: Invalid Rar Archive Usage

I also find that the post-processing doesn't always delete the leftover files and leaves .sr_processed files lying around. In some rare occurrences, the "moved" file didn't move but was deleted - which meant I had to re-download the file (perhaps check the file actually moved before deleting it?).