I just installed Silverstripe 4.1.1 via composer. I have a local environment. I use OpenSuse. The installation was straight forward. However, whenever y try to edit a page through the CMS I get an error and a little popup appears with the word “Forbiden”. I also tried installing sylverstripe on Bitnami LAMP stack (Same computer) and the same happened.
I also installed Silverstripe 4.1.1 on my VPS with DreamHost and everything works perfect. I can edit pages without any issue.
Here is a screenshot of the CMS error.