Here is some debug logging maybe someone can shed some light on the issue
For info: I was watching 2 previous episodes of the same serie where I downloaded a found subtile track with no problem. Now on the third the issue return “Failed to download”
{
"type": "log:message",
"level": 3,
"message": "[Metrics] Updating session last interaction time",
"time": "2025-12-30T22:25:55.804Z"
},
{
"type": "ajax",
"url": "https://Redacted.33fadb2d7fcd42aa98f2ede4379674aa.plex.direct:32400/library/metadata/10712/subtitles?language=nl&hearingImpaired=0&forced=0&X-Plex-Product=Plex%20Web&X-Plex-Version=4.157.0&X-Plex-Client-Identifier=us2m931fjthv3g19f17l6w21&X-Plex-Platform=Chrome&X-Plex-Platform-Version=143.0&X-Plex-Features=external-media%2Cindirect-media%2Chub-style-list&X-Plex-Model=standalone&X-Plex-Device=OSX&X-Plex-Device-Name=Chrome&X-Plex-Device-Screen-Resolution=1651x1249%2C3440x1440&X-Plex-Token=TOKEN&X-Plex-Language=en&X-Plex-Session-Id=8a215c81-f74e-44cd-88f8-dc15e918172f&X-Plex-Playback-Session-Id=417b8e79-6aea-4037-8783-81819489d4f7&X-Plex-Playback-Id=73a71955-f028-4fe8-8140-5b69a6e814fc",
"status": 200,
"headers": {
"Accept-Language": "en",
"Accept": "application/xml"
},
"response": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<MediaContainer size=\"2\" identifier=\"com.plexapp.plugins.library\" mediaTagPrefix=\"/system/bundle/media/flags/\" mediaTagVersion=\"1758205129\">\n<Stream id=\"63639\" key=\"/library/streams/63639\" streamType=\"3\" codec=\"srt\" language=\"Dutch\" languageTag=\"nld\" languageCode=\"nld\" format=\"srt\" providerTitle=\"OpenSubtitles\" score=\"858\" sourceKey=\"/library/streams/5329017\" title=\"Blue.Bloods.S02E05.A.Night.on.the.Town.1080p.AMZN.WEB-DL.DD.5.1.H.265-SiGMA\" displayTitle=\"Dutch (SRT OpenSubtitles)\" extendedDisplayTitle=\"Blue.Bloods.S02E05.A.Night.on.the.Town.1080p.AMZN.WEB-DL.DD.5.1.H.265-SiGMA (Dutch SRT OpenSubtitles)\">\n</Stream>\n<Stream id=\"63640\" key=\"/library/streams/63640\" streamType=\"3\" codec=\"srt\" language=\"Dutch\" languageTag=\"nld\" languageCode=\"nld\" format=\"srt\" providerTitle=\"OpenSubtitles\" score=\"4097\" sourceKey=\"/library/streams/3393743\" title=\"Blue.Bloods.S02E05.HDTV.XviD-LOL-dut\" displayTitle=\"Dutch (SRT OpenSubtitles)\" extendedDisplayTitle=\"Blue.Bloods.S02E05.HDTV.XviD-LOL-dut (Dutch SRT OpenSubtitles)\">\n</Stream>\n</MediaContainer>\n",
"time": "2025-12-30T22:25:55.916Z"
},
{
"type": "ajax",
"url": "https://Redacted.33fadb2d7fcd42aa98f2ede4379674aa.plex.direct:32400/library/metadata/10712/subtitles?key=%2Flibrary%2Fstreams%2F63639&codec=srt&language=nld&hearingImpaired=0&forced=0&providerTitle=OpenSubtitles&X-Plex-Product=Plex%20Web&X-Plex-Version=4.157.0&X-Plex-Client-Identifier=us2m931fjthv3g19f17l6w21&X-Plex-Platform=Chrome&X-Plex-Platform-Version=143.0&X-Plex-Features=external-media%2Cindirect-media%2Chub-style-list&X-Plex-Model=standalone&X-Plex-Device=OSX&X-Plex-Device-Name=Chrome&X-Plex-Device-Screen-Resolution=1651x1249%2C3440x1440&X-Plex-Token=TOKEN&X-Plex-Language=en&X-Plex-Session-Id=8a215c81-f74e-44cd-88f8-dc15e918172f&X-Plex-Playback-Session-Id=417b8e79-6aea-4037-8783-81819489d4f7&X-Plex-Playback-Id=73a71955-f028-4fe8-8140-5b69a6e814fc",
"status": 200,
"headers": {
"Accept-Language": "en"
},
"time": "2025-12-30T22:25:57.187Z"
},
{
"type": "log:message",
"level": 1,
"message": "An entity does not exist with the type \"servers\" and id \"undefined\"",
"time": "2025-12-30T22:26:00.037Z"
},
{
"type": "log:message",
"level": 4,
"message": "[Player] Timeline, {\n \"ratingKey\": \"10712\",\n \"key\": \"/library/metadata/10712\",\n \"playbackTime\": 7044,\n \"playQueueItemID\": \"3402\",\n \"state\": \"stopped\",\n \"hasMDE\": 1,\n \"context\": \"home:hub.continueWatching\",\n \"row\": 0,\n \"col\": 0,\n \"time\": 7000,\n \"duration\": 2552000\n}",
"time": "2025-12-30T22:26:00.037Z"
},
{
"type": "log:message",
"level": 1,
"message": "Did not move header \"accept\" to query string. This can result in an unnecessary OPTIONS preflight request.",
"time": "2025-12-30T22:26:00.037Z"
},
{
"type": "log:message",
"level": 4,
"message": "[MediaElement] Releasing media element to pool. type: video",
"time": "2025-12-30T22:26:00.040Z"
},
{
"type": "log:message",
"level": 3,
"message": "[Metrics] Updating session last interaction time",
"time": "2025-12-30T22:26:00.041Z"
},
{
"type": "log:message",
"level": 3,
"message": "[Metrics] Updating session last interaction time",
"time": "2025-12-30T22:26:00.041Z"
},
{
"type": "log:message",
"level": 1,
"message": "[Player] Player was closed or a new playback session was started; ignoring callback",
"time": "2025-12-30T22:26:00.066Z"
},