can you post a screenshot of the device settings in MusicBee, especially the naming templates (Preferences/ Devices/ and open the device in question)
and then could you provide the full path as seen on the device for one of your music files
Screenshot:

Would this suffice? The device name would be MHA-L29, which is a Huawei Mate 9.
The path for SD card means 'Samsung's memory card', as my phone is Japanese localized.
I know it should have some internal name like /storage/sdcard, but my phone doesn't show it.
The stock file manager shows full path as, for example: メモリーカード/Music/2Pac/All Eyez On Me/1-03 Skandalouz.m4a, with 'メモリーカード' being 'memory card'.
The SD card is shown as simply 'memory card' on the phone, but when it's connected to my PC it's 'Samsung's memory card'.
I guess it has something to do with the error?