Experts, help. Using mitmproxy, for android app I change the request body (just by 1 character) and get a 500 code.
Original: "DeviceID":"aaaaaa1" Modified: "DeviceID":"aaaaaa2"
The value of DeviceID can be anything !
But when I change only the headers, everything is fine (code 200). The mitmproxy certificate is installed. I also get a 500 error through Burp Suite. What could be the reason?