Add the recommended value for php.ini variable `max_input_vars` · Issue #1527 · magento/devdocs · GitHub
![magento2 - While Click on custom module getting an error "Invalid Form Key. Please refresh the page" - Stack Overflow magento2 - While Click on custom module getting an error "Invalid Form Key. Please refresh the page" - Stack Overflow](https://i.stack.imgur.com/PbDYw.png)
magento2 - While Click on custom module getting an error "Invalid Form Key. Please refresh the page" - Stack Overflow
wrong message "invalid form key" when max_input_vars is exceeded · Issue #36695 · magento/magento2 · GitHub
![wrong message "invalid form key" when max_input_vars is exceeded · Issue #36695 · magento/magento2 · GitHub wrong message "invalid form key" when max_input_vars is exceeded · Issue #36695 · magento/magento2 · GitHub](https://user-images.githubusercontent.com/51680745/210558761-d28fd30d-a286-401f-86f4-680ce23d9210.png)
wrong message "invalid form key" when max_input_vars is exceeded · Issue #36695 · magento/magento2 · GitHub
![Unable to export Magento database using Xampp PhpMyAdmin due to too many input fields that exceed PHP max_input_vars - Webmasters Stack Exchange Unable to export Magento database using Xampp PhpMyAdmin due to too many input fields that exceed PHP max_input_vars - Webmasters Stack Exchange](https://i.stack.imgur.com/nZarK.png)