Using Responder 2.1.*

[EDDINE-ZERO]

Checking dependencies...
Using Responder 2.1.*
port 80/tcp busy, please check
port 5353/udp busy, please check
kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]

[craigsblackie]

You can use netstat to identify what services are listening on those ports. Typically they are avahi and nginx/apache.

Please provide further information if this isn't your issue.