grav.CRITICAL: ob_start(): function 'ob_gzhandler' not found or invalid function

I’m not really sure what to do with this one.

Here’s the full error:

[2015-12-27 20:07:32] grav.CRITICAL: ob_start(): function 'ob_gzhandler' not found or invalid function name - Trace: #0 [internal function]: Whoops\Run->handleError(2, 'ob_start(): fun...', '/srv/www/myempt...', 205, Array) #1 /srv/www/myempty.space/myempty/system/src/Grav/Common/Grav.php(205): ob_start('ob_gzhandler') #2 /srv/www/myempty.space/myempty/index.php(37): Grav\Common\Grav->process() #3 {main} [] []

Hi, turn off “Gzip compression” in the System configuration. I think your server does not come with ZLib enabled in PHP, and this causes the problem

Thanks! Now I’m getting: E_ERROR - Call to undefined function Doctrine\Common\Cache\hash()

Sounds like you have some of the vendor libraries missing?