When I send a GET request with Burp, it doesn't have "Accept-Encoding" header on it's header. Because of that, I can't get a js file from a website (It returns 406 response).
But when I add "Accept-Encoding: gzip" header manually on Repeater section, application returns 200 response.
I checked Firefox's "about:config" section, it's in default settings.
I installed "Modify Headers" plugin to Firefox, add "Accept-Encoding" header. Still, I Don't see this on my request headers.
I couldn't find any Burp plugin which adds custom header to requests.
How can I solve this issue?