Plex unwatched filter for errors

When trying to filter by unwatched tv library this error always shows up, anything I can do to fix it.

There was an unexpected error loading this library
Please visit our forums if you continue to experience problems

Version 3.1.1
Version 1.5.1.3520

  1. perform a database optimization

  2. restart Plex server. afterwards, wait a few minutes

If you still have problems after that, you probably have to perform a database repair.

Awesome thanks so much the optimization fixed it.