Unable to write cache symfony2

Question

RuntimeException in ClassCollectionLoader.php line 239: 

Failed to write cache file \"/var/www/fareast/app/cache/dev/classes.php\".

I have this error

Answer 1

In symfony3 i've faced the same issue...

So, problem would not solve only using "cache clear"

You have to change (R/W)permission of cache folder in your project

For ex: "projectname/var/cache"

Now refresh...

If still issue is coming, change(R/W)permission of logs folder in your project

For ex: "projectname/var/logs"