CONSOLE ERROR: Refused to execute script from 'http://127.0.0.1:8000/security/contentTypeOptions/resources/script-with-header.pl' because its MIME type ('') is not executable, and strict MIME type checking is enabled. Check that script sent with an 'X-Content-Type-Options: nosniff' header is correctly blocked if no 'Content-Type' header is present. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS window.scriptsSuccessfullyLoaded is 0 PASS successfullyParsed is true TEST COMPLETE