How to check Game Build Errors?

I am currently developing an RPG game on Unity 2017.1. When I run it in the editor, everything runs smoothly, but when I build the game, the animation on my main character does not run. When I check the output log, I get this message ![Output Log][1] Is that why my animation isn't running? if not, is there a way to check my animation in the game build? [1]: /storage/temp/146998-outputlog1.jpg