Fatal Crash After Completing 4 Chaos Champions Quest

Description: After completing the questline for defeating the 4 Chaos Champions (I don't remember the title of it), I received a fatal error after the follow up text leading to the quest The Road to Holy Terra. I have completed all sidequests available to me prior to finishing this main story quest and occupied all available sectors as well. The order that I defeated the chaos champions in was Nurgle -> Slaanesh -> Tzeentch -> Khorne (I don't remember the names of the champions in question). I have uploaded the crash logs as well as my Dxdiag file

0_1548810029091_Crash Report.7z

I do not think the order matters. many get the crash. I finished 2nd one on the list last of the 4 and it's crashing.