Magento 1.9.3 error

[mykeadam]

Getting the following error on magento 1.9.3.
Fatal error: Class 'Tawk_Widget_Model_Resource_Setup' not found in D:\wamp64\www\site\includes\src\Mage_Core_Model_Resource_Setup.php on line 234

[crysix]

You need to compile again. Looks like you are using compile mode.