proot warning: can't sanitize binding "/mnt/media_rw/<UUID>": Permission denied

[smartm0use]

I have installed Ubuntu on my Android phone to which I attached a pendrive via OTG. I have found where the pendrive is mounted on Android: /mnt/media_rw/<UUID> ("UUID" is the identifer of my pendrive).

Then I added this path to "start-ubuntu20.sh" file, in this way:

command+=" -b /sdcard -b /storage -b /mnt/media_rw/<UUID>"

But when I launch Ubuntu I get this error: proot warning: can't sanitize binding "/mnt/media_rw/08E6-1EFB": Permission denied

Why am I getting this and how to solve it?

[freebrowser1]

Use /storage/08E6-1EFB when using an external SD card via USB ?

[smartm0use]

The problem was related to permissions. I had to root the phone to get rid of that error in Andronix. Isn't weird?