Failed to save user: .... (silence) some error appears on creating a mail user, but there is no actual error shown

[WoozyFace]

SYSTEM INFORMATION
OS type and version	Debian Linux 12
Usermin version	2.203
Virtualmin version	7.30.8
Theme version	23.03
Nginx version	1.22.1
Package updates	All installed packages are up to date

[Ilia]

Can you show a screenshot of the previous page, before submitting it?