My Plex does not connect the desktop (server)

Finally after 3 days I could manage to install a Plex Media Server on my computer with a complete new Mint 20.3 version. But, after adding an Bibliophile, only music, it did not archive and find music…and it says that the 2 dictionaries (mappen) does not connect with the Desktop (server). I cannot find out what I did wrong or what happen, I am stuck, Please help me.

Please go to Settings - Server - (left panel) Troubleshooting - Download Logs

It will give you a ZIP file.

Please attach that ZIP file here.

I suspect you need to grant permission to user plex to read the media files.

Thank you for responding…but I cannot find it, Offcourse I have Plex in Dutch, and I know Server is Server in Englisch and Dutch…but I cannot find that Server, its not mentioned? Maybe I just do not see it…sorry.
thanks,
Jean

Hi Chuck Pa,
Ok, I do not know what I did, except that I deleted the server, and somehow I made a new one which connected, so I could make a new bibliotheek and found only my Home disk (SSD) with Linux on it and some files in my Music directioary, it played. But, I wanted to make a new bibliotheek, a second one and try to find a bigger directioray which is locate on another big harddrive. This one he could not find, not outside the home disk…I think if I could find it then I would be ready and statisfy. Thanks anyway for the response, I am gratefull.
greetz,
Jean