Download link required for PlexMediaServer-1.19.4.2935 x86_64 spk (for x86 64-bit Intel Synology DS218+)

Plex Media Server NAS & Devices
4

Please go back into Settings - Server - General – SHOW ADVANCED –

Turn DEBUG logging back on.

  1. you save nothing by turning it off.
  2. Logs are fixed size.
  3. Plex Media Server logs, regardless of content
  4. DEBUG makes my job 100x easier.

Now, as for other problem.

  1. you have more media (folders to monitor) than the Linux default (8192)
  2. We can easily increase this but must be mindful of how much on NAS systems with small amounts of main memory.
  3. Below is the Syno FAQ How-To to address this for you. Please follow it carefully and ask any questions before doing.

In your logs, the evidence to this is:

Jul 22, 2020 21:42:17.614 [0x7f23f940d700] WARN - Subscription: No container available for /tv.plex.providers.epg.cloud:9/metadata/plex%3A%2F%2Fshow%2F5cffa4adaf67270021157e46
Jul 22, 2020 21:42:17.616 [0x7f241e552700] INFO - Refreshing paths watched by LibraryUpdateManager
Jul 22, 2020 21:42:17.618 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/A Daughter's Nightmare (2014)" (13: Permission denied)
Jul 22, 2020 21:42:17.618 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/A Good Year (2006)" (13: Permission denied)
Jul 22, 2020 21:42:17.618 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/A Woman Deceived (2017)" (13: Permission denied)
Jul 22, 2020 21:42:17.618 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/Abducted Love (2016)" (13: Permission denied)
Jul 22, 2020 21:42:17.618 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/Agatha Christie's Crooked House (2017)" (13: Permission denied)
Jul 22, 2020 21:42:17.619 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/Agatha Christie's Sparkling Cyanide (2003)" (13: Permission denied)
Jul 22, 2020 21:42:17.619 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/American Gangster (2007)" (13: Permission denied)
Jul 22, 2020 21:42:17.619 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/Animals United (2010)" (13: Permission denied)
Jul 22, 2020 21:42:17.619 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/Arbitrage (2012)" (13: Permission denied)
Jul 22, 2020 21:42:17.619 [0x7f241fa23700] ERROR - [Notify] Failed to add watch for "/volume1/Films/Assassination Games (2011)" (13: Permission denied)

Notice it says “NOTIFY” and “Failed to add watch”.
This is the evidence we needed.