Sonarr is not Radarr nor Readarr they are completely different applications and Sonarr runs under a completely different framework.
So if it suddenly stopped working, what did you change and the answer is not nothing. If nothing changed then it wouldn’t have stopped working.
Info logs are useless for debugging…not sure why they’re provided when the forum post template and wiki are very clear otherwise.
2022-08-11 10:36:29.3|Warn|Nzbget|[The.Old.Man.S01E07.720p.WEB.H264-PLZPROPER] Error occurred while trying to delete data from '/Users/Pete/Downloads/complete/TV/The.Old.Man.S01E07.720p.WEB.H264-PLZPROPER'.
[v3.0.9.1555] System.UnauthorizedAccessException: Access to the path '/Users/Pete/Downloads/complete/TV/The.Old.Man.S01E07.720p.WEB.H264-PLZPROPER' is denied. ---> System.IO.IOException: Operation not permitted
What’s possibly unclear about the error? It looks like nzbget can no longer delete / access that folder