When we want to add something to the shopping cart from the product detail page we get this message :<\/p>\n
We are currently unable to add this item to your cart. (We can't add this item to your shopping cart right now)<\/p>\n
Problem what is in exeption.log is :<\/p>\n
main.CRITICAL: Exception: Notice: Undefined index: file_locking in web\/vendor\/magento\/zendframework1\/library\/Zend\/Cache\/Backend\/File.php on line 992 ....<\/pre>\nThe problem is caused in this file :<\/p>\n
vendor\/magento\/sendingframework1\/library\/Zend\/Cache\/Backend\/File.php<\/p>\n
In a debug session, the file blocked the cache because it contained a variable that was not fully acknowledged. On one server we had never had this problem but on another this came up all of a sudden .<\/p>\n
Solution :<\/p>\n
Change this<\/p>\n
protected $_options = array(\n 'cache_dir' => null,\n 'read_control' => true,\n 'read_control_type' => 'crc32',\n 'hashed_directory_level' => 0,\n 'hashed_directory_perm' => 0700,\n 'file_name_prefix' => 'zend_cache',\n 'cache_file_perm' => 0600,\n 'metadatas_array_max_size' => 100\n );\n\nto :\n\n protected $_options = array(\n 'cache_dir' => null,\n 'file_locking' => false,\n 'read_control' => true,\n 'read_control_type' => 'crc32',\n 'hashed_directory_level' => 0,\n 'hashed_directory_perm' => 0700,\n 'file_name_prefix' => 'zend_cache',\n 'cache_file_perm' => 0600,\n 'metadatas_array_max_size' => 100\n );<\/pre>\nAfter this, all problems were solved and all products could be neatly added to the shopping cart.<\/p>\n","protected":false},"excerpt":{"rendered":"