Can't import email to opportunity, get white screens

I installed version 7.1.4 and setup my email. Tried to import an email as an opportunity and went to a full white screen. Went over the installation for hours checking permissions and no progress. I then deleted and installed 8.7.1 and not exactly the same issue because 7.1.4 was completely white where 8.7.1 still has the top navigation menu, but the page is white. This is install on a debian ec2 instance, not a hosting company. Would appreciate some help on this. Thanks!

Do you mean 7.14? Check combability matrix.