Fail to restart Tomcat when TM start before config pulled

Here are the steps to reproduce it:
1) Clean install traffic monitor
2) Start tomcat and check the tomcat process ID
3) Add traffic monitor to traffic ops
4) Run traffic monitor config init perl script
5) Restart traffic monitor and check the tomcat process ID

Check the process id, you will find the traffic monitor is not restarted at all. And the traffic monitor will be always in error status except kill it by "kill -9".