[MODULE] WHMCS

[Rynoxx]

I have this problem.. Please Help!
WHMCS Message: Account couldn't be created, the API Request failed.

Module debug log:

Code:

Caught exception: Unable to parse response body into XML: String could not be parsed as XML

/whmcs/modules/servers/sentora/lib/senitor/src/Handlers/XmwsResponse.php(57): GuzzleHttp\Message\Response->xml()
Forum Add-ons and Usage /whmcs/modules/servers/sentora/lib/senitor/src/Handlers/XmwsResponse.php(35): Ballen\Senitor\Handlers\XmwsResponse->checkErrors()
MySupport Addon /whmcs/modules/servers/sentora/lib/senitor/src/Handlers/XmwsRequest.php(92): Ballen\Senitor\Handlers\XmwsResponse->__construct(Object(GuzzleHttp\Message\Response))
Test of MySupport MOD /whmcs/modules/servers/sentora/lib/senitor/src/Senitor.php(130): Ballen\Senitor\Handlers\XmwsRequest->send()
#4 /whmcs/modules/servers/sentora/sentora.php(157): Ballen\Senitor\Senitor->send()
#5 /whmcs/modules/servers/sentora/sentora.php(236): sendSenitorRequest(Array, 'whmcs', 'CreateClient', Array)
Forum theme /whmcs/includes/classes/WHMCS/Module/AbstractModule.php(0): sentora_CreateAccount(Array)
Install Docs-ISPconfig /whmcs/includes/classes/WHMCS/Module/Server.php(0): WHMCS\Module\AbstractModule->call()
Advertising forum? /whmcs/includes/modulefunctions.php(0): WHMCS\Module\Server->call()
#9 /whmcs/includes/modulefunctions.php(0): ModuleCallFunction()
Addon Store Development /whmcs/admin/clientsservices.php(0): ServerCreateAccount()
Going live in two weeks time! {main}

And with latest module i have a blank page on whmcs, like this:
https://i.gyazo.com/aecd957d991e802a0329...ea4bfe.png

Hi, kini which version of PHP are you running? And when you get the blank page, what PHP errors are you getting?