M2 Call Trace Does Not Work

If you click on Call Trace icon and it shows: "No Data found, Trace Call again", make sure /tmp/m2/m2_call_tracing directory exist on your server.
If there is no such directory, use these commands:

mkdir -p /tmp/m2/m2_call_tracing
chmod 777 -R /tmp/m2/m2_call_tracing/