Hello altogether!
I recently installed the component “swiss hydrological data” and it has been working until a few days ago. Unfortunateli I couldn’t fix the problem myself, so please help me 
This is my log entry:
2017-05-25 19:34:09 ERROR (MainThread) [homeassistant.components.sensor] Error while setting up platform swiss_hydrological_data
Traceback (most recent call last):
File "/srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages/homeassistant/helpers/entity_component.py", line 155, in _async_setup_platform
entity_platform.schedule_add_entities, discovery_info
File "/usr/lib/python3.4/asyncio/futures.py", line 388, in __iter__
yield self # This tells Task to wait for completion.
File "/usr/lib/python3.4/asyncio/tasks.py", line 286, in _wakeup
value = future.result()
File "/usr/lib/python3.4/asyncio/futures.py", line 277, in result
raise self._exception
File "/usr/lib/python3.4/concurrent/futures/thread.py", line 54, in run
result = self.fn(*self.args, **self.kwargs)
File "/srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages/homeassistant/components/sensor/swiss_hydrological_data.py", line 62, in setup_platform
xmltodict.parse(response.text)['AKT_Data']['MesPar']) is False:
File "/home/homeassistant/.homeassistant/deps/xmltodict.py", line 330, in parse
parser.Parse(xml_input, True)
Thank you!