Due to the path-to-regexp update, the webpage is not rendering properly.

[YoungHypo]

Problem:

When I type localhost:8081 into my browser, I can't render the webpage properly.

Reason:

#633 has updated path-to-regexp from package.json/dashboard. The pathToRegexp of v3.0.0 returns only one parameter regex, while v8.2.0 returns the list {regex,keys}, according to path-to-regexp latest usage Therefore, we need to make changes to the dashboard wherever path-to-regexp is called.