Backup to external HDD from nextcloudpi (Error: path doesn't exist)

NextCloudPi version v1.34.7
NextCloudPi image NextCloudPi_docker_01-20-21
Nextcloud check ok
— —
Nextcloud version 20.0.4.0

I started my nextcloudpi docker container with the usb drives as external volumes. The container itself can find the new HDD I plugged in, but nextcloudpi says the path does not exist. Whats the matter here?

root@a7b6b1f7f045:/# ls /media
root@a7b6b1f7f045:/# ls extHDD
Backup_4TB  ncp15tb

I started the container with:
sudo docker run -d -p 4443:4443 -p 443:443 -p 80:80 -v ncdata:/data -v /media/simon/:/extHDD --name nextcloudpi ownyourbits/nextcloudpi 192.168.103.44

grafik

@OliverV Do you please have any idea what could be wrong here? I updated to v1.37, deleted the container and started it again, no change.

Edit: It worked with sudo docker run -d -p 4443:4443 -p 443:443 -p 80:80 -v ncdata:/data -v /media/simon/ncp15tb:/extHDD/ncp15tb/ --name nextcloudpi ownyourbits/nextcloudpi 192.168.103.44, but w/o ncp15tb its not working.

Not enough info provided…I’d check the log.
Looks like the path /extHDD/ncp15tb does not exist inside the container.
What does your fstab look like and output of df -h and ls -lh /media/