Unable to create Vault - fusermount version not recognized

Hi, i’m still quite new to Lnux and got lots to discover and learn.

My actual “puzzle”:
i was able to a create a plasma vault on my Pc, but on my Notebook, i’m unable to do so , because fusermount version is not recognized.

Now that’s odd as fuse3 is - or at least seems to be - installed.
In addition, it’s a fresh install of the same distro as on my PC.

Any help or hint how to solve my puzzle?

I use a hardened Fedora Kinoite distribution named SecureBlue (see secureblue.dev). I have the same problem. KDE Vault is unable to recognize fusermount3:

fuse2 has been deprecated and depends on the unsafe suid-root, that’s why SecureBlue didn’t include it. Will the KDE Team transition to fuse3 soon?