Hello
I cannot log in to the client area after upgrade to 7.8.3. Every time I log-in to the client area it gives me this error:
Oops!
Something went wrong and we couldn't process your request.
Please go back to the previous page and try again.
Error: Call to undefined function WHMCS\getClientDefaultCardDetails() in /home/sites/8a/7/76a3770144/public_html/billing/vendor/whmcs/whmcs-foundation/lib/Client.php:0
Stack trace:
#0 /home/sites/8a/7/76a3770144/public_html/billing/vendor/whmcs/whmcs-foundation/lib/ClientArea.php(0): WHMCS\Client->getDetails()
#1 /home/sites/8a/7/76a3770144/public_html/billing/clientarea.php(0): WHMCS\ClientArea->initPage()
#2 {main}
