browse problem after installation

[alex_chang1]

First ,we install /var/www/html/magento2 ,  but something happened and we are not sure why we can not log in, so we re-install a new magento2 in /var/www/html/magento23  ,  but when we try to log in from the browse , the same problem happened ??  Please help us.

Warning: Uncaught Exception: Warning: require(/var/www/html/magento2/pub/errors/report.php): failed to open stream: Permission denied in /var/www/html/magento2/vendor/magento/framework/App/Http.php on line 361 in /var/www/html/magento2/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 /var/www/html/magento2/vendor/magento/framework/App/Http.php(361): Magento\Framework\App\ErrorHandler->handler(2, 'require(/var/ww...', '/var/www/html/m...', 361, Array) #1 /var/www/html/magento2/vendor/magento/framework/App/Http.php(361): require() #2 /var/www/html/magento2/vendor/magento/framework/App/Http.php(181): Magento\Framework\App\Http->handleGenericReport(Object(Magento\Framework\App\Bootstrap), Object(Magento\Framework\Exception\FileSystemException)) #3 /var/www/html/magento2/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->catchException(Object(Magento\Framework\App\Bootstrap), Object(Magento\Framework\Exception\FileSystemException)) #4 /var/www/html/magento2/vendor/magento in /var/www/html/magento2/vendor/magento/framework/App/ErrorHandler.php on line 61

Fatal error: Magento\Framework\App\Http::handleGenericReport(): Failed opening required '/var/www/html/magento2/pub/errors/report.php' (include_path='/var/www/html/magento2/generated/code:/var/www/html/magento2/generated/code:/var/www/html/magento2/vendor/magento/zendframework1/library:.:/usr/share/pear:/usr/share/php') in /var/www/html/magento2/vendor/magento/framework/App/Http.php on line 361

[Vimal Kumar]

Hi @alex_chang1 

There might be some issue with the deployment. You can regenerate generated folder using compile command.

Try the following command once:

find . -type d -exec chmod 755 {} \; && find . -type f -exec chmod 644 {} \; && chmod u+x bin/magento

You can use sudo as well.

Then try following commands once n sequence to re generations.

chmod -R 0777 var/ pub/ generated/
rm -rf var/cache/* var/view_preprocessed/* generated/* pub/static/*
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static-content:deploy -f
php bin/magento cache:flush

 I hope it will help you!

[alex_chang1]

Hello

Thanks for the suggestion . However. after using your commands , the problem is still the same. 

Should we un-install the previous Magento 2 first ? But we do not know how to un-install it.

[Vimal Kumar]

Hi @alex_chang1 

BTW it looks like a permission error only.

Have you tried using sudo user?

sudo chmod -R 0777 var/ pub/ generated/

For uninstall, you can delete installed magento folder and drop database.

I hope it might help you!