500 error: Output filter: Response body too large I recently copied a drupal 7 site from my development server to my production server. Everything on the site seems to be working as expected, except for when I log in as the admin user and try to access admin/modules. When I go there I get a 500 "Internal Server Error" page. In the server's error log, I get: ModSecurity: Output filter: Response body too large (over limit of 6291456, total not specified). [hostname "(my hostname)"] [uri "/drupal/index.php"] [unique_id "T4JOln8AAAEAAFLlyE4AAAAK"]

(unique_id changes every time I get the error, but the other parts don't.)

Any idea what could be causing this?
ModSecurity is an Apache module (a Web Application Firewall) that protects sites from i.e SQL injectiosn, XSS attacks, prevents php shell execution and so on. You must contact your hoster and let them know because they need to change modsec rules maybe.