Fix Broken PHP Cron job

We have a Google doc that lists inventory levels for items that we carry at our store. Some of these items are drop shipped. We hired someone to make a PHP script the scrapes inventory levels from our dropshipper's websites, and posts these levels in a Google doc. It has worked fine for many months, but it stopped working recently. I don't know PHP and need someone to check out the script and see what the problem is. It should be a simple fix, it had broke once before and the original person we had hired was able to fix it immediately. We will provide Cpanel access to the script and access to the Google doc.