I had this error while cook my project when I upgraded to 5.6. I have already tried different branches from github - ue5main(5.7), dev5.6, 5.6. release - they all produce the same result. At the same time, everything builds perfectly in 5.3, 5.4 and 5.5. I have already done a full validation of the project, fix upped all redirects. but the error EXCEPTION_ACCESS_VIOLATION always pops up.