[2021] Can't complete Capitol building stronghold story mission.

As tittle says, i am near the end of the mission and it says Reach the front of the Capitol Building. i open the gates walk to the doors and they are closed, blocking my way. I even tried to watch a youtube video of the level and it shows the main doors open, i cant proceed inside and there is no way to restart the mission so the game is now stuck here and i can't complete the story. Any ideas. I have tried fast travelling and everything.