Makes sure these boxes are checked befor submitting your issue - thank you!

• [] If you encounter any problems using the tool, please check if there has a new version to update(Run weex update [pluginname]@latest).
• [] Check the FAQ, make sure there have not the same issue.

Your development environment

• Check weex-toolkit verison (Run weex -v)
• Detact what's wrong with your environment (Run weex doctor)
• Which platform (Win/Mac/Ubuntu..)

The key error stack message.

Steps to reproduce the problem.(Maybe a dotwe link)