When I use Magento Connect Manager and installed mage_all_latest, in the middle of installation it says can't open the folder: downloader/.cache/..... renderer and downloader/.cache/..... conf.

Can someone help me how to resolve this. Thanks!


Cause :-

The reason is that function working with archives passing non-ASCII characters in the filename and the filename cannot be created simply due to filesystem restrictions on filenames.

The simple fix can be just patch :-

The fix has been applied already for all our new installations.

| improve this answer | |

Below is a quick, proper and easy way to upgrade Magento 2 website version to latest one.

NOTE: There are many ways to upgrade Magento version, but I recommend this way to everyone.

Important: Take backup of database and files before follow below steps.

Follow below steps to upgrade any magento 2 website from current to latest Magento version..

Step 1: php bin/magento maintenance:enable

Step 2: composer require magento/product-community-edition=2.3.1 --no-update

NOTE: Change 2.3.1 in above line to version in which you want to upgrade. Here i am upgrading to 2.3.1

Step 3: composer require --dev phpunit/phpunit:~6.2.0 friendsofphp/php-cs-fixer:~2.10.1 lusitanian/oauth:~0.8.10 pdepend/pdepend:2.5.2 sebastian/phpcpd:~3.0.0 squizlabs/php_codesniffer:3.2.2 --no-update

Step 4: composer remove --dev sjparkinson/static-review fabpot/php-cs-fixer --no-update

Step 5: Update autoload

"autoload": {

"psr-4": {

    "Magento\\Framework\\": "lib/internal/Magento/Framework/",

    "Magento\\Setup\\": "setup/src/Magento/Setup/",

    "Magento\\": "app/code/Magento/",

    "Zend\\Mvc\\Controller\\": "setup/src/Zend/Mvc/Controller/"




Step 6: composer create-project --repository=https://repo.magento.com magento/project-community-edition=2.3.1 temp_dir --no-install NOTE: Change 2.3.1 in above line to version in which you want to upgrade. Here i am upgrading to 2.3.1

Step 7:

rm -rf update

mkdir update

mv temp_dir/update update

rm -rf temp_dir

Step 8: composer update

Step 9: redis-cli -s /var/run/redis-multi-a0a405e6.redis/redis.sock FLUSHALL NOTE: Only required some time: (Below command is different based on server, Please ask to hosting support for clear radis cache. Above is working for nexcess clould hosting)

Step 10:

bin/magento cache:clean

rm -rf var/cache/*

rm -rf var/page_cache/*

rm -rf generated/code/*

Step 11: php bin/magento setup:upgrade

Step 12: php bin/magento maintenance:disable

I have prepared above all steps from this doc https://devdocs.magento.com/guides/v2.3/comp-mgr/cli/cli-upgrade.html Please refer this doc to know in detail about each steps.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.