I have LAMP up and running. I created a wordpress theme and installed it without permission issues on my local server (on the folder /var/www/wordpress). But when I'm trying to run it or preview it, I get a blank page. If I check the source code of the blank page, it's completely blank.
But this only happens locally. I tried to upload it to an online server and everything worked ok. First I thought it was permissions issue but I have the same ones as the other themes - that work without problems.
As you can see, the permissions for my theme are:
and the permissions for the other templates are: