not support to nacos version 2.0.x

[hbzheng8]

n version 1.4.x，GET /nacos/v1/ns/service querying a not exist service , return status code 500. return message body caused: service api@@hyperf is not found!

But in version 2.0.x ，return status code 200 ， return message body {"namespaceId":"67f9ce9b-c3d5-4dbb-acf8-308b6b0b928e","groupName":"api","name":"hyperf","protectThreshold":0.0,"metadata":{},"selector":{"type":"none"},"clusters":[]}