New problem with library management

Audirvana Mac Version 3.5.32 (3562) on macOS 10.14.6
After deleting a track most likley during playback, the track is not removed from the playlist in Audirvana. It shows the following file path:
Bildschirmfoto 2020-03-07 um 17.49.39
Restarting my Mac does not solve the problem

Hello @o99, does your file are stored in a NAS? have you checked your indexing settings of your NAS?

Hello @Damien3: The files are stored on an external HDD connected via USB.