TWRP unable to mount anything except external-sd (invalid argument)

[Android Central Question]

Hello,
I'm trying to install Magisk on my Leagoo T8s but there's errors even before Magisk installation:
Erimary block device '/dev/block/platform/bootdevice/by-name/userdata' for mount point '/data' is not present!
Failed to mount '/data' (invalid argument)
Failed to mount '/cache' (invalid argument)
Failed to mount '/system' (invalid argument)

What can I do ?

Thanks