TYPO3 Exception 1392409507¶
Below, the TYPO3 community may have provided additional information or solutions for this exception. However, these may or may not apply to your particular case. If you can provide more information, you should come back here and add your experience and solution steps to this issue once you have resolved it.
General TYPO3 troubleshooting tips can be found in the section “Troubleshooting” of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms.
Invalid form/module token detected. Access Denied.¶
The problem is usually caused by an missing security token which protects against CSRF. It can occur in the backend by clicking on an icon, link or using other controls. This problem is usually only backend related but could also occur in the frontend when using frontend editing.
For TYPO3 integrators:
If you encounter this problem with default backend modules included in the TYPO3 distribution you should first check if there is already an error report on https://forge.typo3.org and if this is not the case feel free to create a new bug report.