On your tiki-check.php, I see:
Error reporting information Partly You will not get all errors reported as your error_reporting level is at 22519. This is not necessarily a bad thing (and it might be just right for production sites) as you will still get critical errors reported, but sometimes it can be handy to get more information. Check your error_reporting level in php.ini in case of having issues.
Can you change to report all errors?