Can control but not get info from the vacuum

[faaafo]

While commands like start or stop work

e.g.

mirobo --ip 192.168.188.23 --token 66xyz start

Getting info throws an error

bash-5.0# mirobo --ip 192.168.188.23 --token 66xyz info

Error: Unable to request miIO.info from the device

bash-5.0# mirobo --ip 192.168.188.23 --token 66xyz -d info

INFO:miio.vacuum_cli:Debug mode active
DEBUG:miio.vacuum_cli:Read stored sequence ids: {'seq': 30, 'manual_seq': 0}
DEBUG:miio.vacuum_cli:Connecting to 192.168.188.23 with token 66xyz
DEBUG:miio.protocol:Unable to decrypt, returning raw bytes: b''
DEBUG:miio.miioprotocol:Got a response: Container: 
    data = Container: 
        data = b'' (total 0)
        value = b'' (total 0)
        offset1 = 32
        offset2 = 32
        length = 0
    header = Container: 
        data = b'!1\x00 \x00\x00\x00\x00\x03L\x83x\x00\x01G\xfb' (total 16)
        value = Container: 
            length = 32
            unknown = 0
            device_id = unhexlify('034c8378')
            ts = 1970-01-01 23:19:23
        offset1 = 0
        offset2 = 16
        length = 16
    checksum = b'\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff' (total 16)
DEBUG:miio.miioprotocol:Discovered 034c8378 with ts: 1970-01-01 23:19:23, token: b'ffffffffffffffffffffffffffffffff'
DEBUG:miio.miioprotocol:192.168.188.23:54321 >>: {'id': 31, 'method': 'miIO.info', 'params': []}
DEBUG:miio.protocol:Unable to parse json '': Expecting value: line 1 column 1 (char 0)
DEBUG:miio.click_common:Exception: Unable to request miIO.info from the device
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/miio/protocol.py", line 193, in _decode
    return json.loads(decoded)
  File "/usr/local/lib/python3.8/json/__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "/usr/local/lib/python3.8/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/local/lib/python3.8/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/miio/device.py", line 177, in info
    return DeviceInfo(self.send("miIO.info"))
  File "/usr/local/lib/python3.8/site-packages/miio/device.py", line 143, in send
    return self._protocol.send(
  File "/usr/local/lib/python3.8/site-packages/miio/miioprotocol.py", line 193, in send
    m = Message.parse(data, token=self.token)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 288, in parse
    return self.parse_stream(io.BytesIO(data), **contextkw)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 300, in parse_stream
    return self._parsereport(stream, context, "(parsing)")
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 312, in _parsereport
    obj = self._parse(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 1981, in _parse
    subobj = sc._parsereport(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 312, in _parsereport
    obj = self._parse(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 2439, in _parse
    return self.subcon._parsereport(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 312, in _parsereport
    obj = self._parse(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 3987, in _parse
    obj = self.subcon._parsereport(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 312, in _parsereport
    obj = self._parse(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 4265, in _parse
    obj = self.subcon._parsereport(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 312, in _parsereport
    obj = self._parse(stream, context, path)
  File "/usr/local/lib/python3.8/site-packages/construct/core.py", line 698, in _parse
    return self._decode(obj, context, path)
  File "/usr/local/lib/python3.8/site-packages/miio/protocol.py", line 199, in _decode
    raise PayloadDecodeException(
miio.exceptions.PayloadDecodeException: Unable to parse message payload

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/miio/click_common.py", line 59, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/click/decorators.py", line 73, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/miio/vacuum_cli.py", line 423, in info
    res = vac.info()
  File "/usr/local/lib/python3.8/site-packages/miio/device.py", line 179, in info
    raise DeviceInfoUnavailableException(
miio.exceptions.DeviceInfoUnavailableException: Unable to request miIO.info from the device

Environment:
: Docker on Raspberry Pi 3 Model B Plus Rev 1.3\0
: 4.19.66-v7+

Further related issue: home-assistant/core#43836

[rytilahti]

I presume you are using gen 1 rockrobo vacuum and blocking access to the Internet, am I correct? If yes, that is a common problem with those devices, and is the reason why a separated exception was added in #685. The error message for mirobo should be improved to avoid the stacktrace printout, so this issue should remain open until that's done.

The linked PR is irrelevant for this issue.

[faaafo]

Indeed, you're correct: 1st gen vacuum; blocked internet access.

Will open another issue for the linked --d timezone issue

[rytilahti]

The error message should now be cleaner (was part of changes in #915).