Problem resoled!
Was getting: ob_end_clean(): failed to delete buffer. No buffer to delete… error. Maybe because of empty line in home page content I’m not sure. To fix this replaced line 36 index.php:
ob_end_clean();
with
if (ob_get_contents()) ob_end_clean();
The function mb_strlen() is not enabled by default in PHP and was not on my system. Enabling this resolved second error. http://php.net/manual/en/mbstring.installation.php