I have upgraded my whmcs to 7.5. After upgrade the viewinvoices.php in client area and invoices.php in admin are throwing error like "Oops!Something went wrong and we couldn't process your request.".
I have checked the logs and it is giving error like "[12-Apr-2018 15:46:56] PHP Fatal error: Call to protected method WHMCS\Invoice::loadData() from context '' in /public_html/client/viewinvoice.php on line 0".
Also the same error is coming after client submitting a ticket.
Is anyone else facing the same issue or i am the only one. Kindly, help me out with this.