I did everything as you said, but as a result I do not see anything when adding the plex library.
rclone mount gcrypt: ~/mnt/gdrive --allow-other --allow-non-empty --cache-db-purge --buffer-size 32M --use-mmap --dir-cache-time 72h --drive-chunk-size 16M --timeout 1h --vfs-cache-mode full --vfs-read-chunk-size 128M --vfs-read-chunk-size-limit 1G &
folder was created here /home/medi/mnt/gdrive