Random Crashed

 You have mods installed. We don't know if it is a mod causing it. Remove them and see if it works.

Before we jump to conclusions, can someone who knows Java look into the error and find out a possible cause?

You have to prove it is a vanilla issue, and not an issue with one of your mods. Mojang isn't responsible for mods' bugs.
The burden of proof is on the reporter, not others.