The work of configurating the Video Annotation Tool ----Vatic really drives me crazy, you just cannot expect what bugs you can get . After three days of struggling, I finnally work it out. Here are some records:
These two links are very helpful:
https://gitlab.com/EAVISE/publicwiki/wikis/install-vatic
http://cs-people.bu.edu/sameki/blog2.pdf
just follow the detailed instructions step by step.