Creating Users Errors

Hello,
I try to select a category already created by me when I was creating a new user and i can’t see any category on the list. It doesn’t work.
Can you tell me what is the fix for creating users easy and not getting errors about e-mail or can’t see category?
See, I can’t change the categories at all and can’t create new users neither. Please.

This worked for me.
Found the fix. Fix was part of this https://github.com/MacWarrior/clipbucket-v5/issues/60

in the entry by lodhja
Fix was the following:
line 427 of upload/includes/classes/form.class.php

$field[‘value’] = ‘’;
with
$field[‘value’] = array();

Made the change to the file and now it is working.