Just tried again.
Ive seen the 127.0.0.1 has caused issues, so tried localhost instead.
Same problem.
When creating an account, I fill in all fields, then submit and it goes to a blank screen.
Log in to B.O gives the same result as my original post
Console shows this
Request URL:http://wip.********/en/login?back=my-account
Request method:POST
Remote address:***********
Status code:
500