defp do_validate_utf8!(<<byte, _::bits>>, exception, context, error_code, byte_position) do
    case error_code do
      500 ->
        raise exception,
              "Internal Server Error (500): invalid UTF-8 on #{context}, got byte #{byte}"

      404 ->
        raise exception,
              "Page Not Found (404): invalid UTF-8 on #{context}, got byte #{byte}"

      error_code when error_code in 100..999 ->
        raise exception,
              "Status code #{error_code}: invalid UTF-8 on #{context}, got byte #{byte}"
    end
  end

defexception [plug_status: Application.compile_env(...)]