RuntimeException: Unable to create the cache directory (/var/www/sonata/app/cache/dev)

Question

I installed the Sonata admin bundle.
After installation i refresh my page there is the cache problem then i use the following command to remove the cache:

rm -rf app/cache app/log

Then I recreate the directory:

mkdir app/cache app/log

But I got the following error:

Runtime Exception : Unable to create the cache directory (/var/www/sonata/app/cache/dev).

Solution 1

It looks like a file/directory permission problem. The directory has to be writeable by the webserver. After creating the directory you should adjust the permissions with

chown -R www-data:www-data app/cache
chown -R www-data:www-data app/log

Or for Symfony 4+:

chown -R www-data:www-data var

This only works on linux systems. The user and group depends on your distribution. On Debian and Ubuntu this should be www-data, on CentOS it's afaik apache.

Another solution would be not to delete the whole folders but only their contents via

$ rm -rf app/log/* app/cache/*

But please be careful with this command.

Solution 2

This solution is correct : https://stackoverflow.com/a/20128013/2400373

But is necessary change the 2 commands in Symfony3: First you should is inside the folder of project:

$ sudo chown -R www-data:www-data var/cache
$ sudo chown -R www-data:www-data var/logs

After delete the cache:

$ sudo rm -rf var/cache/*
$ sudo rm -rf var/logs/* 

Regards

Solution 3

I solved it changing user and group of folder var/cache and var/logs, then I cleaned cache:

sudo chown -R www-data:www-data var/logs
sudo chown -R www-data:www-data var/cache

sudo rm -rf var/logs/* var/cache/*

Solution 4

And for centos:

chown -R apache:apache app/cache

if you're coming here for Symfony Help you might have to do this as well if you delete the entire app/logs folder

chown -R apache:apache app/logs

Solution 5

I found a similar problem when I was using the PHP symfony as the error picture. I found it after running command

php bin/console cache:clear

I solved it by removed everything inside the folder /app/var/cache

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