Hey there Legends!!!
Has something recently changed with IMDB import lists? I got this error on list that I've had for years, then did an update to Radarr, deleted the list, re-added, still the same.
[v5.6.0.8846] NzbDrone.Core.ImportLists.Exceptions.ImportListException: Radarr API call resulted in an unexpected StatusCode [NotFound] at NzbDrone.Core.ImportLists.RadarrList2.RadarrList2Parser.PreProcess(ImportListResponse listResponse) in ./Radarr.Core/ImportLists/RadarrList2/RadarrList2Parser.cs:line 39 at NzbDrone.Core.ImportLists.RadarrList2.IMDbList.IMDbListParser.ParseResponse(ImportListResponse importListResponse) in ./Radarr.Core/ImportLists/RadarrList2/IMDb/IMDbListParser.cs:line 27 at NzbDrone.Core.ImportLists.HttpImportListBase`1.FetchPage(ImportListRequest request, IParseImportListResponse parser) in ./Radarr.Core/ImportLists/HttpImportListBase.cs:line 185 at NzbDrone.Core.ImportLists.HttpImportListBase`1.FetchMovies(Func`2 pageableRequestChainSelector, Boolean isRecent) in ./Radarr.Core/ImportLists/HttpImportListBase.cs:line 73