A php application on a cpanel server kept throwing this:
The fix requires recompiling php with –enable-pcntl Fortunately cpanel offers the Easy Apache script. The bad part is that it doesn’t have an option for pcntl. So you have to specify it as a custom compile time option. Edit (or create – for PHP5) and add /var/cpanel/easy/apache/rawopts/all_php5
On one line
Then rebuild Easy Apache.