Q:

Vapor3 crash when I use fluent with SQLite

I am learning how to make server-side by Vapor,but I got an error which I don't know why. 

It will crash after "Build Success" showed. I am using Vapor 3.0.0-beta.0 by the way. 

you can download the project code from [github]:https://github.com/RockyAo/ServerSide/tree/master/JSONPoll

A:

The Vapor 3 beta is currently a little unstable, so make sure you have the latest builds with swift package update and try again (note that it now requires Swift 4.1)

