Fatal error: Uncaught RedisException: Invalid argument in /www/wwwroot/page.beike.cn/library/RedisCache.php:18 Stack trace: #0 /www/wwwroot/page.beike.cn/library/RedisCache.php(18): Redis->connect('', NULL) #1 /www/wwwroot/page.beike.cn/library/RedisCache.php(28): RedisCache->__construct() #2 /www/wwwroot/page.beike.cn/index.php(36): RedisCache::getInstance() #3 {main} thrown in /www/wwwroot/page.beike.cn/library/RedisCache.php on line 18