Hi
After placing a purchase order, at the end of the order, it shows the following error message:
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Oops!
Something went wrong and we couldn't process your request.
Please go back to the previous page and try again.
TypeError: Argument 6 passed to WHMCS\User\User::createClient() must be of the type string, null given, called in /home/MIURL/public_html/cart.php on line 0 and defined in /home/MIURL/public_html/vendor/whmcs/whmcs-foundation/lib/User/User.php:0
Stack trace:
#0 /home/MIURL/public_html/cart.php(0): WHMCS\User\User->createClient('Jorge', 'Ls', '', 'warehosting@gm...', 'Lima', NULL, 'CITY', 'City', '52100', 'BO', '+51.987 654 321', true, Array, '', false, 0)
#1 {main}
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whmcs8 has many errors, in the most common and used functions
How is this problem solved? my business is stopped, I can't sell !!