when i run go tool trace m.trace it opens this link http://127.0.0.1:37721/trace
on both chrome & firefox i go an empty page
in chrome Console i found this error
GET http://127.0.0.1:37721/trace_viewer_html 404 (Not Found) Uncaught ReferenceError: tr is not defined
i found this question talk about issue in firefox and chrome version i use ubuntu16.04/chrome66.0/golang1.10
the problem was "I install Go from your OS package manager"
after reinstalling GO following official instructions the problem solved
you can find more in issue created with golang repo here
