Unable to load main bundle

Hello There,

I decided to play swtor again after a few months.

I downloaded the game on steam and tried to open it, but the game didn't start. A few minutes later an error popped out.

'Unable to load main bundle' 

I hope someone could help me. 

I've seen someone ask dxdiag info for the same problem but ı have no idea if it helped. 

Sincerely.