[erlang-questions] A question on sys:trace

[Dmitry]

Hello
My application has a name - ws.
When I tried to trace calls it gives me exeptiion error
sys:trace(ws,true).** exception exit: {noproc,{sys,trace,[ws,true]}}
Why does such an error occur?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20170530/7bd0ff71/attachment.htm>