Circular dependency: Magento\Customer\Model\Session depends on Magento\Customer\Model\Url and vice versa

Question

Magento2 shows this error:

Circular dependency: Magento\Customer\Model\Session depends on Magento\Customer\Model\Url and vice versa.

I have cleared var/cache and var/generation directory. But it doesn't work.
Does anyone know how to solve it?

Answer 1

This should not happen.
Make sure you have this in the di.xml of the customer module

<type name="Magento\Customer\Model\Session">
    <arguments>
        <argument name="configShare" xsi:type="object">Magento\Customer\Model\Config\Share\Proxy</argument>
        <argument name="customerUrl" xsi:type="object">Magento\Customer\Model\Url\Proxy</argument>
        <argument name="customerResource" xsi:type="object">Magento\Customer\Model\ResourceModel\Customer\Proxy</argument>
        <argument name="storage" xsi:type="object">Magento\Customer\Model\Session\Storage</argument>
        <argument name="customerRepository" xsi:type="object">Magento\Customer\Api\CustomerRepositoryInterface\Proxy</argument>
    </arguments>
</type>

this means that the session model would use as dependency Magento\Customer\Model\Url\Proxy instead of Magento\Customer\Model\Url.

Clear the var/generation folder in case something was wrongly generated.

Answer 2

If you use redis for caching, I just ran a redis-cli FLUSHALL and it fixed after that.

Answer 3

There was an issue about is back on GitHub a while ago: https://github.com/magento/magento2/issues/762

Try to run the following to clear your cache and generation folders:

rm -Rf /path/to/magento2/var/cache/*
rm -Rf /path/to/magento2/var/generation/*