I have a strange problem.
When I am logged and try to add an item to the cart I receive an error message (We can't add this item to your shopping cart right now. logged).
if i try when unlogged it work perfectly.
/vendor/magento/zendframework1/library/Zend/Cache/Backend and edit the file.php
'cache_dir' => null, and replace it with 'cache_dir' => 'var/cache',
Not work after replace this code
How can i solve the problem?