You installed Gitlab from a Bitnami installer or on Amazon Web Services Marketplace

I ran into this issue when I installed Gitlab from the Bitnami-flavored AWS ec2 image:

32-bit 64-bit
Everytime I would click link in Firefox the page would show up entirely blank.

The html is sent perfectly as confirmed with Firebug and on a refresh the page would show up as expected.

Works fine in chrome.. Hmm. Google Page Speed? Yep.

To disable the page speed mod, edit the config file: /opt/bitnami/apache2/conf/pagespeed.conf and change the value:

ModPagespeed off

After changing this, don’t forget to restart Apache.
$ sudo /opt/bitnami/ctlscript.sh restart apache

Or if you’re not using a BitNami machine:
$ sudo service apache2 restart

Checkout the original Github issue.

Great job to the Gitlab team & Bitnami on the collaboration!