Server error handling for restful APIs

## **What’s the problem you're trying to solve**
We haven't had a proper way to handle errors for restful API, that is, we'll always throw "500 internal server error" for any errors.

## **Describe the solution you’d like**
Catch these errors and set the proper HTTP status code. We can wrap our errors when they occurred and set the desired HTTP code there.

## **Additional context**