So after I solved this issue of paladin danse attacking the liberty prime in the brother hood of steel base where i just cant fast travel becuase they are fighting. By changing my companion into paladin danse and immideiately dismissing him to my Sanctuary settlement. I tought that it can solve my problem , i tried to walking to the Sanctuary from (the BoS base) hoping that I can fast travel but i eneded up failing . Fortunately for me I have finished the main quest but I wanted to explore the wasteland more and do more side quests . This bug is pissing me off and it is truning my gameplay of fallout 4 into walkng simulator 2k15 .

see video for details : /watch?v=ONWZpTl8-rE

It may svck since it's supposed to be available in the game, however I haven't fast traveled even once. Haven't done it in FO3, NV, or Skyrim and honestly it makes the games a whole lot better, there's so many unmarked things and random battles etc. That you would never see if you fast travel all the time. Much more rewarding experience IMO.