Unable To Change Settings For Certain Shipping Methods

We are trying to change shipping settings for a certain shipping method on our cs-cart backend but it results in the "errorAccess denied: Possible CSRF attack" message.

Same thing works for some shipping methods but doesn't work for some. We have tried the anti_csrf setting to false, increasing the max_input_vars to 2000 but no luck. We are getting the same error.

Anybody knows how to fix this?


Try increasing the value of the php flag max_input_vars

Best regards