Error Sentora-WHMCS

Hi @[Rynoxx] 

i've installed the sentora server module in whmcs

And i can't access to my service, when i'm clicking i'm getting this error !

Oops!
Something went wrong and we couldn't process your request.

Please go back to the previous page and try again.
Whoops\Exception\ErrorException: Cannot use lexical variable $eventName as a parameter name in /var/sentora/hostdata/zadmin/public_html/mydomain.tld/modules/servers/sentora/lib/senitor/vendor/guzzlehttp/guzzle/src/Event/Emitter.php:48
Stack trace:
/var/sentora/hostdata/zadmin/public_html/mydomain.tld/vendor/whmcs/whmcs-foundation/lib/Utility/Error/Run.php(0): WHMCS\Utility\Error\Run->handleError(64, 'Cannot use lexi...', '/var/sentora/ho...', 48)
<QUICKREFERENCES#1> [internal function]: WHMCS\Utility\Error\Run->handleShutdown()
<QUICKREFERENCES#2> {main}

can you help me please 

Regards