Unable to fetch watchlist: Malformed message body: Invalid JSON

[maxnatamo]

Hello,

I noticed my Plex watchlist never got reflected into Radarr and Sonarr, and it seemed to be cause by invalid JSON being returned from Plex:

2024-06-19T23:15:34.258953953+02:00 21:15:34.258 [io-compute-0] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON
2024-06-19T23:15:44.619825803+02:00 21:15:44.618 [io-compute-0] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON
2024-06-19T23:15:55.001647281+02:00 21:15:55.001 [io-compute-1] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON
2024-06-19T23:16:05.458917958+02:00 21:16:05.458 [io-compute-1] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON
2024-06-19T23:16:15.867620815+02:00 21:16:15.864 [io-compute-0] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON
...

Is this a known issue? Any solutions?

Redacted log found here: https://pastebin.com/hWW88vae

[rstrblstr]

Also happening to me. Tried updating to the latest version and its still occurring.

00:36:45.346 [io-compute-0] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON
00:36:45.573 [io-compute-3] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.MalformedMessageBodyFailure: Malformed message body: Invalid JSON

[nylonee]

Think Plex has changed their API for accessing friends watchlists. I'll take a look today

[nylonee]

It looks like watchlist RSS feeds have either changed the way you can fetch the json version, or removed that functionality completely.

When I try to hit this using cURL:

curl --location 'https://rss.plex.tv/REDACTED' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json'

I end up getting XML back rather than json. An example of what I used to expect is here: https://github.com/nylonee/watchlistarr/blob/main/src/test/resources/watchlist.json

I'll keep digging, the easiest thing would be to find out if we can still access this data in JSON structure, otherwise I'll have to do an XML implementation instead.

[nylonee]

Got it, adding ?format=json to the URL fixes the issue and gives me JSON again

[maxnatamo]

While I think most of the issue has been fixed, I'm still seeing some errors in the logs:

2024-06-21 17:32:36.096624+02:0015:32:36.095 [io-compute-0] WARN  PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.client.UnexpectedStatus: unexpected HTTP status: 500 Internal Server Error for request GET https://rss.plex.tv/[[REDACTED]]?format=json

When opening the link in a browser, the response is returns fine.

Some items also seems to not be added from the watchlist, although, that's mostly likely because they're not even returned in the JSON response.

[bunkabee]

I am also having this issue after re-pulling the latest version.

02:56:55.521 [io-compute-2] WARN PlexTokenSync$ - Unable to fetch watchlist from Plex: org.http4s.client.UnexpectedStatus: unexpected HTTP status: 500 Internal Server Error for request GET https://rss.plex.tv/[[redacted]]?format=json

[AhmedNSidd]

Getting the same error here. As mentioned above, I can see the watchlist fine when the link is opened up in the browser.

EDIT: Since this issue has been closed, I'll open a new issue for this... #161

[nylonee]

Thanks all, let's track this problem in the new issue that @AhmedNSidd raised #161