The upgrade with Megento 2.0.2 fails with the error "An error occurred while starting the application. For more information, see the exception log."

Question

Magento 2.0.2 on CentOS using the Bitnami stack. The following command line update using Composer.

Attempting to load a storefront after updating (the following steps without errors) results in the error above. The file /var/log/exception.log shows: -

[2016-06-09 15:18:04] main.CRITICAL: exception 'Magento\Framework\Exception\LocalizedException' with message 'Source class "" for "Magento\Framework\App\Response\Http\Interceptor" generation does not exist.' in /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/Code/Generator.php:171 Stack trace: 0 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/Code/Generator.php(100): Magento\Framework\Code\Generator->tryToLoadSourceClass('Magento\\Framewo...', Object(Magento\Framework\Interception\Code\Generator\Interceptor)) 1 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/Code/Generator/Autoloader.php(35): Magento\Framework\Code\Generator->generateClass('Magento\\Framewo...') 2 [internal function]: Magento\Framework\Code\Generator\Autoloader->load('Magento\\Framewo...') 3 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/ObjectManager/Factory/AbstractFactory.php(105): spl_autoload_call('Magento\\Framewo...') 4 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/ObjectManager/Factory/Compiled.php(88): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) 5 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/ObjectManager/Factory/Compiled.php(130): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') 6 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/ObjectManager/Factory/Compiled.php(67): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') 7 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/ObjectManager/ObjectManager.php(57): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...', Array) 8 /opt/bitnami/apps/magento/htdocs/lib/internal/Magento/Framework/App/Bootstrap.php(233): Magento\Framework\ObjectManager\ObjectManager->create('Magento\\Framewo...', Array) 9 /opt/bitnami/apps/magento/htdocs/index.php(38): Magento\Framework\App\Bootstrap->createApplication('Magento\\Framewo...') 10 {main} [] [] } 

Checked permission and cleared var / cache manually, but to no avail.

Any ideas how I can solve this error?

Answer 1

This should help:

 cd <your magento root> rm -Rf var/generation/* var/di/* bin/magento cache:clean 

Answer 2

for ubuntu: 1) goto var / www / html / magento (the root folder where your magento is located) or in htdocs if you installed the lamp. 2) sudo rm -Rf var / generation 3) sudo bin / magento cache: clean 4) sudo bin / magento cache: flush

Done .....