Topic: Cannot create new user after upgrade to v1.7.0
==== Required information ====
- iRedMail version: 
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): 
- Linux/BSD distribution name and version: 
- Related log if you're reporting an issue: 
======== Required information ====
- iRedMail version: iRedAdmin-Pro-MySQL-1.7.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): 
- Linux/BSD distribution name and version: FreeBSD 9.1
- Related log if you're reporting an issue: 
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After upgrading, I cannot create user with the warning:
 int() argument must be a string or a number, not 'NoneType'
though I had insert every bottom
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