Fatal error: Uncaught Error: Class 'Mageplaza\SocialLogin\Helper\Data' not found in /home/gradecar/public_html/grademart.com/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121 Stack trace: #0 /home/gradecar/public_html/grademart.com/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Mageplaza\\Socia...', Array) #1 /home/gradecar/public_html/grademart.com/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Mageplaza\\Socia...') #2 /home/gradecar/public_html/grademart.com/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Mageplaza\\Socia...') #3 /home/gradecar/public_html/grademart.com/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Compiled->create('Mageplaza\\Socia...', Array) #4 /home/gradecar/public_html/grademart.com/vendo in /home/gradecar/public_html/grademart.com/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php on line 121