pub a api by struct must have bool field

[ansjsun]

struct AAA{
Name string
}

introspection.AddIntrospectionToSchema(schema)
router.NewRoute().Name(model).Methods(http.MethodGet, http.MethodPost).Path(model).Handler(graphql.HTTPHandler(schema))

by HTTPHandler method start is ok

but when i use iql , it report

Error: Invalid or incomplete schema, unknown type: bool. Ensure that a full introspection query is used in order to build a client schema.
    at r (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:32:21670)
    at n (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:32:21603)
    at i (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:32:21863)
    at x (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:32:24361)
    at file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:28:15421
    at Array.reduce (native)
    at n (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:28:15385)
    at N (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:32:24308)
    at L (file:///Applications/GraphiQL.app/Contents/Resources/app.asar/dist/bundle.js:32:25039)
    at Array.map (native)

but i take struct to

struct AAA{
Name string
Hello bool
}

it works well!!!!!!