I have just moved from a new server and updated from Magento 1.9.2.4
to 1.9.3.8
.
Everything is working as expected except for when a customer logs in on the front end.
It gets stuck on a white screen, if I click back it then redirects to teh account.
It also does the same on new account creations.
In the logs there are errors for
"HEADERS ALREADY SENT:"
I have tried clearing cache and sessions several times.