Fatal error: Uncaught Error: Call to undefined function wp_cache_get() in /var/www/html/wp-includes/option.php:620 Stack trace: #0 /var/www/html/wp-includes/option.php(164): wp_load_alloptions() #1 /var/www/html/wp-includes/functions.php(2468): get_option('siteurl') #2 /var/www/html/wp-includes/functions.php(2410): _wp_upload_dir(NULL) #3 /var/www/html/wp-config.php(145): wp_upload_dir() #4 [internal function]: custom_error_handler(2, 'mysqli_real_con...', '/var/www/html/w...', 1990, Array) #5 /var/www/html/wp-includes/class-wpdb.php(1990): mysqli_real_connect(Object(mysqli), '172.17.0.1', 'wp', 'l-!o=Ys0NFqj', NULL, 4001, NULL, 0) #6 /var/www/html/wp-includes/class-wpdb.php(772): wpdb->db_connect() #7 /var/www/html/wp-includes/load.php(724): wpdb->__construct('wp', 'l-!o=Ys0NFqj', 'wp', '172.17.0.1:4001') #8 /var/www/html/wp-settings.php(136): require_wp_db() #9 /var/www/html/wp-config.php(181): require_once('/var/www/html/w...') #10 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...') #11 /var/www/html/wp-b in /var/www/html/wp-includes/option.php on line 620