contao/core — Issue #3699: Invalid request token! BE & FE
Author: Marc3llo
Created: 2011-12-15 18:25:03+00:00
State: open

"Invalid request token!

The request token could not be verified. Please go back and try again.

This error occurres if there is a POST request without a valid authentication token. In Contao 2.10, the referer check has been replaced with a request token system. If the problem persists, you are maybe using an incompatible third-party extension or have not correctly updated your Contao installation.

For more information, visit the Contao FAQ page or search the Contao forum."

This appears in the BE and FE, when using the back button of the browser (safari5).

- In the BE when installing an Extension and mistakenly clicking the back button.

But more importantly, in the FE, it appears when sending a form after using the browsers back button. This wasn't the case in earlier Contao versions. The forms should just be resent like in earlier versions of contao.