Synology Camera Problems

Since 42.3 I have the following errors:

17-04-13 18:55:05 WARNING (Thread-7) [homeassistant.components.emulated_hue] Alexa type is deprecated and will be removed in a future version
17-04-13 18:55:06 ERROR (MainThread) [homeassistant.components.camera] Error while setting up platform synology
Traceback (most recent call last):
  File "/srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages/homeassistant/helpers/entity_component.py", line 148, in _async_setup_platform
    entity_platform.async_schedule_add_entities, discovery_info
  File "/srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages/homeassistant/components/camera/synology.py", line 86, in async_setup_platform
    query_resp = yield from query_req.json(content_type=None)
  File "/home/homeassistant/.homeassistant/deps/aiohttp/client_reqrep.py", line 697, in json
    return loads(stripped.decode(encoding))
  File "/usr/lib/python3.4/json/__init__.py", line 318, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.4/json/decoder.py", line 343, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.4/json/decoder.py", line 361, in raw_decode
    raise ValueError(errmsg("Expecting value", s, err.value)) from None
ValueError: Expecting value: line 1 column 1 (char 0)

Anybody can help?

THX in Advance

Peter