TypeError: Cannot read property '__schema' of undefined

[srghma]

"graphql:schema_to_types": "graphql-to-typescript app/schema.graphql app/graphql.d.ts",

yarn run v0.28.4
$ graphql-to-typescript app/schema.graphql app/graphql.d.ts
TypeError: Cannot read property '__schema' of undefined
Done in 0.92s.

app/schema.graphql

# source: https://api.graph.cool/simple/v1/cixmkt2ul01q00122mksg82pn
# timestamp: Sun Sep 17 2017 21:32:52 GMT+0300 (EEST)

enum _ModelMutationType {
  CREATED
  UPDATED
  DELETED
}

# Meta information about the query.
type _QueryMeta {
  count: Int!
}

input AUTH_PROVIDER_EMAIL {
  email: String!
  password: String!
}

input AuthProviderSignupData {
  email: AUTH_PROVIDER_EMAIL
}

input CreateFile {
  name: String!
}

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