When I click "Play" on the launcher it all works fine but then it says crash report on one of the tabs and won't work

Put the summary of the bug you're having here
it all works fine but then it says crash report on one of the tabs and won't work
What I expected to happen was...:
Describe what you thought should happen here
to start playing the game
What actually happened was...:
Describe what happened here
it says crash report on one of the tabs and wont work
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ... click play
3. ...