API Visit problem

I create some APIs, bind with virtserver:

https://swaggerhub.com/api/marvin/clownfish/1.0.0

but when I with the address directly, I got some error info like this:

{

    message: "Missing matching response for specified Accept header"

}

address: https://virtserver.swaggerhub.com/marvin/clownfish/1.0.0/search

I don't know where I am wrong and what I need to do with this error message, and I really need to visit directly for program develop

Thanks