JSON-rpc 无法运行

新下载的直接php start.php start提示

PHP Fatal error:  Uncaught Exception: class \Protocols\JsonNL not exist in /www/server/rpc_service/vendor/workerman/workerman/Worker.php:2272
Stack trace:
#0 /www/server/rpc_service/vendor/workerman/workerman/Worker.php(2169): Workerman\Worker->parseSocketAddress()
#1 /www/server/rpc_service/Applications/JsonRpc/start.php(20): Workerman\Worker->__construct('JsonNL://0.0.0....')
#2 /www/server/rpc_service/start.php(29): require_once('/www/server/rpc...')
#3 {main}
  thrown in /www/server/rpc_service/vendor/workerman/workerman/Worker.php on line 2272

Fatal error: Uncaught Exception: class \Protocols\JsonNL not exist in /www/server/rpc_service/vendor/workerman/workerman/Worker.php:2272
Stack trace:
#0 /www/server/rpc_service/vendor/workerman/workerman/Worker.php(2169): Workerman\Worker->parseSocketAddress()
#1 /www/server/rpc_service/Applications/JsonRpc/start.php(20): Workerman\Worker->__construct('JsonNL://0.0.0....')
#2 /www/server/rpc_service/start.php(29): require_once('/www/server/rpc...')
#3 {main}
  thrown in /www/server/rpc_service/vendor/workerman/workerman/Worker.php on line 2272

以前下载过的可以运行，就是今天下载的无法运行。。
以前版本v3.5.20   新的版本 v3.5.22
/Applications/JsonRpc/Protocols 这个目录下也有JsonNL 
不明白为什么还会提示这个。是不是没有注册到命名空间呢？命令空间也没有做过任何修改的呢。是全新下载的。