Why I can't save any new CMS page or block in Magento Cloud?

Question

I'm using Magento 2.4 and when I try to save any CMS block or page I got this screen below, saying The requested URL was rejected.

How could I solve it?

Solution

It seems a timeout issue. You can exceed time out limitation.

For Staging/Production, increase the Fastly timeout - go to Stores > Configuration > Advanced > System > Full Page Cache > Fastly Configuration, set the Admin Path Timeout to 600, then click on Upload VCL to Fastly

Create a new Custom VCL rule in order to increase the timeout via the admin panel. You can create a new fetch rule with this code below, remember to change the admin to your custom admin URL.

if ( req.url ~ "^/(index\.php/)?admin/" ) {
  set bereq.first_byte_timeout = 600s;
}

For all environments, you can set the PHP timeout in php.ini in the application/repository root, commit it to GIT and redeploy.

You can set max_execution_time / memory_limit on your Magento project root push/deploy.

max_execution_time = 3600

Please follow the document.

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