This problem usually occurs when we move our site from one server to other, There are two solutions for this problem, Solution 1: Go to this location lib/Zend/Cache/Backend/ and open file.php file you’ll see the code something like this protected $_options = array ( 'cache_dir' => null , 'file_locking' => true , 'read_control' => true , 'read_control_type' => 'crc32' , 'hashed_directory_level' => 0 , 'hashed_directory_umask' => 0700 , 'file_name_prefix' => 'zend_cache' , 'cache_file_umask' => 0600 , 'metadatas_array_max_size' => 100 ); change this code as below protected $_options = array ( 'cache_dir' => '/tmp' , 'file_locking' => true , 'read_control' => true , 'read_control