![magento2 - Why I'm seen "Invalid Form Key. Please refresh the page" in the frontend? - Magento Stack Exchange magento2 - Why I'm seen "Invalid Form Key. Please refresh the page" in the frontend? - Magento Stack Exchange](https://i.stack.imgur.com/01WoE.png)
magento2 - Why I'm seen "Invalid Form Key. Please refresh the page" in the frontend? - Magento Stack Exchange
![Fail to upload image on configurable returns "alert("true")" · Issue #24128 · magento/magento2 · GitHub Fail to upload image on configurable returns "alert("true")" · Issue #24128 · magento/magento2 · GitHub](https://user-images.githubusercontent.com/191149/62981695-47649e80-be6d-11e9-8699-ca7628a93f31.png)
Fail to upload image on configurable returns "alert("true")" · Issue #24128 · magento/magento2 · GitHub
![magento2 - Custom Module Controller: Invalid security or form key. Please refresh the page - Magento Stack Exchange magento2 - Custom Module Controller: Invalid security or form key. Please refresh the page - Magento Stack Exchange](https://i.stack.imgur.com/8d9F4.png)
magento2 - Custom Module Controller: Invalid security or form key. Please refresh the page - Magento Stack Exchange
![How to create custom form in magento 2 | validation | file uploading | create custom form in magento 2 frontend How to create custom form in magento 2 | validation | file uploading | create custom form in magento 2 frontend](https://cdn.amasty.com/media/amasty/amoptmobile/amasty/blog/uploads/2019/08/magento-2-google-map-00001_png.webp)