Syntax Error: Unexpected <EOF>

Hello. I am testing this package out with the following config and schema file:

introspection:
  schemaFile: ./sdl.gpl

type Query {
  staff(staffId: Int!): Staff
}

"""
Our fearless staff
"""
type Staff {
  """
  Staff ID
  """
  staffId: Int

  """
  Staff first name
  """
  firstName: String

  """
  Staff last name
  """
  lastName: String
  email: String
  fightsBearsAndWins: Boolean
}

When running npx spectaql config.yml I get the following error:

Syntax Error: Unexpected <EOF>.

Even when the schema file is empty the error occurs.

On version 0.12.0 on Ubuntu. npm version is 6.14.6.

[newhouse]

This is now out in 1.0.0

[pylipp]

It seems that spectaql does not recognise the .gpl file extension (might be a typo anyways?). This config works on my end:

introspection:
  schemaFile:
    - sdl.gql
info:
  x-swaggerUrl: https://www.foo.bar