Order Accept Encountered Problems; Undefined variable & Undefined index

[slrslr]

There seems to be further issues using this module on WHMCS 6.3.2 and PVE 5.0-23

When one go to the Service (PRE VPS) in WHMCS client area, the popup appear with message: no proxmox
The action log says:
13/07/2017 12:28 Module Create Failed - Service ID: 3588 - Error:

When one try to run WHMCS Module create & accept order it says "Order Accept Encountered Problems".
Module Log does snot show any related entry. The WHMCS Apache /admin/error_log shows:

[13-Jul-2017 12:57:33 Europe/Prague] PHP Notice: Undefined variable: where in /home/myusername/public_html/includes/dbfunctions.php on line 2097152
[13-Jul-2017 12:57:51 Europe/Prague] PHP Notice: Undefined variable: success in /home/myusername/public_html/modules/servers/prve/prve.php on line 234
[13-Jul-2017 13:03:15 Europe/Prague] PHP Notice: Undefined index: Template in /home/myusername/public_html/modules/servers/prve/prve.php on line 136
[13-Jul-2017 13:03:15 Europe/Prague] PHP Notice: Undefined index: Password in /home/myusername/public_html/modules/servers/prve/prve.php on line 142
[13-Jul-2017 13:03:16 Europe/Prague] PHP Notice: Undefined index: renewals in /home/myusername/public_html/includes/orderfunctions.php on line 0
[13-Jul-2017 13:04:40 Europe/Prague] PHP Notice: Undefined variable: autorecalcdefault in /home/myusername/public_html/admin/clientsservices.php on line 2097152
[13-Jul-2017 13:05:27 Europe/Prague] PHP Notice: Undefined index: Template in /home/myusername/public_html/modules/servers/prve/prve.php on line 136
[13-Jul-2017 13:05:27 Europe/Prague] PHP Notice: Undefined index: Password in /home/myusername/public_html/modules/servers/prve/prve.php on line 142
[13-Jul-2017 13:05:29 Europe/Prague] PHP Notice: Undefined variable: autorecalcdefault in /home/myusername/public_html/admin/clientsservices.php on line 2097152
[13-Jul-2017 13:05:42 Europe/Prague] PHP Notice: Undefined index: Template in /home/myusername/public_html/modules/servers/prve/prve.php on line 136
[13-Jul-2017 13:05:42 Europe/Prague] PHP Notice: Undefined index: Password in /home/myusername/public_html/modules/servers/prve/prve.php on line 142
[13-Jul-2017 13:05:43 Europe/Prague] PHP Notice: Undefined variable: autorecalcdefault in /home/myusername/public_html/admin/clientsservices.php on line 2097152