toggers_

Hey! just having a slight problem with loading up my minecraft 1.8.9 with forge. i select 1.8.9 forge and press start but it immediately goes straight to saying *game crashed an unexpected issue occurred and the game has crashed. We're sorry for the inconvenience.* i have no idea what to do. i can play without forge 1.8.9 but cant get the game to work with forge. this is my first time using a mod on mac please help