You have to get media out of your home directory on Mint – it doesn’t allow that.
Create a separate directory on /home, which you own (it’ll be neutral because it’s not a “Home” directory for any user, and put media there. Fix permissions so you have full control and Plex can read/execute
Nov 04, 2020 11:48:11.356 [0x7fae80ff9700] DEBUG - Performing a scan with 'Plex Movie' (language: en-US virtual: 0).
Nov 04, 2020 11:48:11.356 [0x7fae80ff9700] DEBUG - * Scanning /home/vicki/Videos/Movies
Nov 04, 2020 11:48:11.356 [0x7fae80ff9700] ERROR - Couldn't check for the existence of file "/home/vicki/Videos/Movies": boost::filesystem::status: Permission denied: "/home/vicki/Videos/Movies"
Nov 04, 2020 11:48:11.356 [0x7fae80ff9700] DEBUG - * Marking media not available in /home/vicki/Videos/Movies
Nov 04, 2020 11:48:11.357 [0x7fae80ff9700] DEBUG - * Taking 0 items out of the map (which has 0 items) for being unavailable.
Nov 04, 2020 11:48:11.357 [0x7fae80ff9700] DEBUG - * Taking 0 directories out of the map (which has 0 dirs) for being unavailable.
Nov 04, 2020 11:48:11.357 [0x7fae80ff9700] DEBUG - Activity: updated activity 246ec7bd-fae5-47ee-b22a-b9e625cfc43b - completed 99.0% - Scanning Movies
Nov 04, 2020 11:48:11.357 [0x7fae80ff9700] DEBUG - Scanner [Plex Movie]: Idle and left with 0 media items.
Nov 04, 2020 11:48:11.357 [0x7fae80ff9700] DEBUG - Removing 0 media items that were left.
Nov 04, 2020 11:48:11.357 [0x7fae80ff9700] DEBUG - Removing 0 directories that were left.
You’re running this server entirely WiFi? This is strongly discouraged. Performance will suffer badly (only 1 device can transmit at a time on WiFI – player making a request or server sending a block – aka. half-duplex. wired is full duplex)
Nov 04, 2020 11:46:58.492 [0x7faefcff9700] DEBUG - NAT: UPnP, attempting port mapping.
Nov 04, 2020 11:46:58.492 [0x7faf0d80f100] DEBUG - Detected primary interface: 192.168.0.22
Nov 04, 2020 11:46:58.492 [0x7faf0d80f100] DEBUG - Network interfaces:
Nov 04, 2020 11:46:58.492 [0x7faf0d80f100] DEBUG - * 1 lo (127.0.0.1) (loopback: 1)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - * 3 wlx74da382afc91 (192.168.0.22) (loopback: 0)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - * 3 wlx74da382afc91 (2601:805:8100:a70:85e4:8dd0:e5d4:2794) (loopback: 0)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - * 3 wlx74da382afc91 (2601:805:8100:a70:cc0e:4aa8:3e57:c86b) (loopback: 0)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - * 3 wlx74da382afc91 (2601:805:8100:a70:7d5f:db9e:e559:9818) (loopback: 0)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - * 3 wlx74da382afc91 (2601:805:8100:a70:afc0:ebfa:535e:c6be) (loopback: 0)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - * 3 wlx74da382afc91 (fe80::f2cd:6428:847b:9d73%wlx74da382afc91) (loopback: 0)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - Creating NetworkServices singleton.
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - NetworkServices: Initializing...
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - NetworkService: Creating new service.
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - NetworkService: Got notification of changed network (first change: 1)
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - NetworkService: Quick dispatch of network change.
Nov 04, 2020 11:46:58.493 [0x7faf0d80f100] DEBUG - NetworkService: Creating new service.