404 not found after installing admin plugin

Hi,
i'm trying to install grav, everything works well, exept when I try to install the admin plugin. I just get à 404 not found from apache...
I tried form the grav+admin zip, from cloning github and then installing the plugin, but I always get that 404... I can get back to the homepage if I disable the rewrite in the .htaccess, that is the only thing I could do. And I can't find any similar problem...

Hi, make sure you read the 404 not found page in hte documentation. That will 100% solve the issue.