"error binding to 127.0.0.1:13420: error creating server listener: Address already in use (os error 48)"

[philsalesses]

Hi, If you run
grin wallet web

Then you visit the page

And follow the instructions it gives you

[joaovpmamede]

Take a look at this issue.
Although it might not work at the moment you may also try killing those processes on 13420.
Check if it's running with lsof -i :13420.