Cron Failure - Mage_Core_Exception

Question

I get this from the error log all the time.

Cron Failure catalog_product alert:

---EXCEPTION---

exception 'Mage_Core_Exception' with message 'Invalid callback: Model for productalert/observer::process does not exist' in Mage.php:598

This is line 598: throw new Mage_Core_Exception($message); and this is the entire section of

/**
     * Throw Exception
     *
     * @param string $message
     * @param string $messageStorage
     * @throws Mage_Core_Exception
     */
    public static function throwException($message, $messageStorage = null)
    {
        if ($messageStorage && ($storage = self::getSingleton($messageStorage))) {
            $storage->addError($message);
        }
        throw new Mage_Core_Exception($message);
    }

Answer 1

productalert/observer::process no longer exists.

Search codebase for productalert. XML is making magento look for

[Vendor]_[Extension]_Model_Observer

public function process() {

productalert will be in XML. https://devdocs.magento.com/guides/m1x/magefordev/mage-for-dev-5.html

There is a refence to this event in XML too under <events> node in XML

Magento 1.9 how to create custom events

Answer 2

Turned out Mage_ProductAlert was false in /app/etc/modules/Mage_All.xml. Change to true and the error not showing anymore.