I'm not sure why this is happening but here's the error message in the console
I'm running ErsatzTV on Unraid in Docker version 25.7.1.
[02:16:40 ERR] Error getting trakt list
Refit.ApiException: Response status code does not indicate success: 403 (Forbidden).
at Refit.RequestBuilderImplementation.<>c__DisplayClass15_0`2.<<BuildCancellableTaskFuncForMethod>b__0>d.MoveNext() in c:\temp\releaser\refit\Refit\RequestBuilderImplementation.cs:line 384
--- End of stack trace from previous location ---
at Refit.Implementation.Generated.ErsatzTVInfrastructureTraktITraktApi.global::ErsatzTV.Infrastructure.Trakt.ITraktApi.GetUserList(String clientId, String user, String list) in /source/ErsatzTV.Infrastructure/obj/release/net9.0/InterfaceStubGeneratorV2/Refit.Generator.InterfaceStubGeneratorV2/ITraktApi.g.cs:line 83
at ErsatzTV.Infrastructure.Trakt.TraktApiClient.GetUserList(String user, String list) in /source/ErsatzTV.Infrastructure/Trakt/TraktApiClient.cs:line 30
[02:16:40 WRN] Unable to add trakt list https://trakt.tv/users/deanosim/favorites: Response status code does not indicate success: 403 (Forbidden).