HESK not loading with HTTP error 330 / blank page

[Kairion]

Script URL: http://suporte.lopesrobertokoury.com.br/
Version of script: 2.7.5
Hosting company: Bitpix
URL of phpinfo.php: http://suporte.lopesrobertokoury.com.br/phpinfo.php
URL of session_test.php: http://suporte.lopesrobertokoury.com.br ... n_test.php
What terms did you try when SEARCHING for a solution: ERR_CONTENT_DECODING_FAILED; HTTP error 330; disable gzip; disable compression

Write your message below:
My HESK installation suddenly stopped loading and is showing on Google Chrome the error "ERR_CONTENT_DECODING_FAILED".

I tried checking what could have happened but I was not able to find out.

What I did find out is that this kind of problem is because the browser is receiving a header that claims to be "gziped" but in fact is not.

I tried to search how could I disable compression on HESK but could not find anything like that.

Could anyone give me a direction from where to start to fix my problem?

Thanks in advance.

EDIT:
I forgot to say that I activated the debug mode and this error shows up on admin interface:
Notice: date_default_timezone_set(): Timezone ID '' is invalid in /home/lopesrobertokoury/www/suporte/inc/common.inc.php on line 1509

Also, admin interface loads broken (just a part of it) or just leads me to a blank screen.

Best regards;
Kairion

[Klemen]

This is not a Hesk generated error, your server is returning an Internal Server Error.

Have you made any changes to the server setup, uploaded any .htaccess or anything similar? Try reverting those changes.

You will need to check server error logs for the exact error message (or ask your hosting company to do that).