"no medium" error trying to reinstall plex

Have used plexpass without a problem for several years. Last month we had some power outages and when I got my server back up, plex could not access the data share where my videos were still located. After fiddling with it unsuccessfully, finally decided to reinstall plex. I keep getting the following :

docker run
  -d
  --name='Plex-Media-Server'
  --net='host'
  -e TZ="America/Chicago"
  -e HOST_OS="Unraid"
  -e HOST_HOSTNAME="Tower"
  -e HOST_CONTAINERNAME="Plex-Media-Server"
  -e 'PLEX_CLAIM'='claim-P6jJSKcHnBXAQbhbu4Zo'
  -e 'PLEX_UID'='99'
  -e 'PLEX_GID'='100'
  -e 'VERSION'='latest'
  -l net.unraid.docker.managed=dockerman
  -l net.unraid.docker.webui='http://[IP]:[PORT:32400]/web'
  -l net.unraid.docker.icon='https://raw.githubusercontent.com/plexinc/pms-docker/master/img/plex-server.png'
  -v '/tmp':'/transcode':'rw'
  -v '/mnt/user/PlexMedia/':'/data':'rw'
  -v '/mnt/user/appdata/Plex-Media-Server':'/config':'rw' 'plexinc/pms-docker'

c0689b7aff31b59d78853ce046e72037c1f38b03102b6a1aef8b6174fab3a819
docker: Error response from daemon: error while creating mount source path '/mnt/user/appdata/Plex-Media-Server': mkdir /mnt/user/appdata/Plex-Media-Server: no medium found.

The command failed.

Any help would be appreciated.