Please Help!! Warning: gzuncompress(): data error index.php

Hello,

If someone could please help me fix this problem or point me in the right direction that would be awesome. I’m stumped on this one and I’m not sure how to fix it.

Basically when I go to the website, https://www.pitpromx.com, I get this error:

Warning: gzuncompress(): data error in /home/pitpro/public_html/index.php on line 1

This is line 1 of index.php:

<?php get_header(); ?>

I de-activated all the plugins and the problem still persisted. I reached out to the creator of the theme and they said I should talk to my webhost for tech support. That didn’t sound right so I figured I would check here first.

Thanks,
Trevor