To what I can tell you, and anyone can tell you based on what you have given us.
Exception in thread "main" java.lang.RuntimeException: Resource not found: resou
so birk_anim.png is not found, and I bet it is the first image you try and load. you have something wrong with the path to your images.
You need to look into reading stack traces, you should be able to understand stack traces if your making games, they are easy to read, and will save you time. They usually point to exactly where the problem is.
The problem is within Resources file on line 36.