Breach Techsmith 134 Mind Network Error Bug/Problem

I encountered a bug (Network Error) when trying to complete the quest Breach Techsmith 134 Mind in Charing Cross station. After the big boss fights i traveled to speak to the The Father. I immediately turned to him again a second time because here was still a speaking bubble visible. Then the “Network Error - You have been disconnected” comes up. Now i can not complete the quest anymore because this error pops after each time i log into the game and start the quest again.

BR