CORE-17088 Does anyone know this error?

[Venicius Holanda]

guys has anyone had this error? he's about to drive me crazy!

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TypeError: Argument 1 passed to WHMCS\User\Validation\ValidationCom\ValidationCom::getSubmitUrlForUser() must be an instance of WHMCS\User\User, null given, called in /var/www/html/cart.php on line 0 and defined in /var/www/html/vendor/whmcs/whmcs-foundation/lib/User/Validation/ValidationCom/ValidationCom.php:0
Stack trace:
#0 /var/www/html/cart.php(0): WHMCS\User\Validation\ValidationCom\ValidationCom->getSubmitUrlForUser(NULL)
#1 {main}

[WHMCS John]

Hi there,

Thanks for reporting this error. We have logged case CORE-17088 internally for this to be investigated and resolved in a future update.

In the meantime this can be worked-around by Unticking the "Force Client Users to enable Two Factor Authentication on Next Login" option at Configuration > System Settings > Two Factor Authentication.

Once we resolve cases and push features they are available at our change log, here:

https://changelog.whmcs.com/

I apologize for the inconvenience, and appreciate your patience as we work to resolve this.

[Gurmeet singh]

I've unchecked the "Force Client Users to enable Two Factor Authentication on Next Login" option but still getting the same error while a fraud order is being placed. Could you please review ?

Quote

TypeError: Argument 1 passed to WHMCS\User\Validation\ValidationCom\ValidationCom::getSubmitUrlForUser() must be an instance of WHMCS\User\User, null given, called in /whmcs/cart.php on line 0 and defined in /whmcs/vendor/whmcs/whmcs-foundation/lib/User/Validation/ValidationCom/ValidationCom.php:0
Stack trace:
#0 /whmcs/cart.php(0): WHMCS\User\Validation\ValidationCom\ValidationCom->getSubmitUrlForUser()
#1 {main}