unable to add a new server

[testttt]

I am unable to add a new server in whmcs. 

Getting the below error:
Whoops\Exception\ErrorException: Cannot redeclare _createCustomer() (previously declared in /home/email360/public_html/modules/servers/resellerclubmdhosting/resellerclubmdhosting.php:423) in /home/email360/public_html/modules/servers/resellerclubresellerhosting/resellerclubresellerhosting.php:522
Stack trace:
#0 /home/email360/public_html/vendor/whmcs/whmcs-foundation/lib/Utility/Error/Run.php(0): WHMCS\Utility\Error\Run->handleError(64, 'Cannot redeclar...', '/home/email360/...', 522)
#1 [internal function]: WHMCS\Utility\Error\Run->handleShutdown()
#2 {main}

Please help.

[testttt]

21 minutes ago, testttt said:

I am unable to add a new server in whmcs. 

Getting the below error:
Whoops\Exception\ErrorException: Cannot redeclare _createCustomer() (previously declared in /home/email360/public_html/modules/servers/resellerclubmdhosting/resellerclubmdhosting.php:423) in /home/email360/public_html/modules/servers/resellerclubresellerhosting/resellerclubresellerhosting.php:522
Stack trace:
#0 /home/email360/public_html/vendor/whmcs/whmcs-foundation/lib/Utility/Error/Run.php(0): WHMCS\Utility\Error\Run->handleError(64, 'Cannot redeclar...', '/home/email360/...', 522)
#1 [internal function]: WHMCS\Utility\Error\Run->handleShutdown()
#2 {main}

Please help.

I have the domain registrar reselleclub activated. Is it causing the issue or please provide me a solution