My Hassbian went down

Just randomly my hassbian on pi went down, can’t load front page. I can SSH into it.
Anyone see a issue?
Log file:

2018-01-07 21:04:59 WARNING (Recorder) [homeassistant.components.recorder] Ended unfinished session (id=134 from 2018-01-07 16:51:21.228030)
2018-01-07 21:05:00 ERROR (Thread-21) [homeassistant.components.octoprint] True 1
2018-01-07 21:05:00 ERROR (MainThread) [homeassistant.setup] Error during setup of component octoprint
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/setup.py", line 193, in _async_setup_component
    component.setup, hass, processed_config)
  File "/usr/lib/python3.5/asyncio/futures.py", line 380, in __iter__
    yield self  # This tells Task to wait for completion.
  File "/usr/lib/python3.5/asyncio/tasks.py", line 304, in _wakeup
    future.result()
  File "/usr/lib/python3.5/asyncio/futures.py", line 293, in result
    raise self._exception
  File "/usr/lib/python3.5/concurrent/futures/thread.py", line 55, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/octoprint.py", line 45, in setup
    octoprint_api.get('printer')
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/octoprint.py", line 107, in get
    response.raise_for_status()
  File "/srv/homeassistant/lib/python3.5/site-packages/requests/models.py", line 935, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 409 Client Error: CONFLICT for url: http://192.168.50.137/api/printer
2018-01-07 21:05:01 ERROR (MainThread) [homeassistant.setup] Unable to setup dependencies of sensor.octoprint. Setup failed for dependencies: octoprint
2018-01-07 21:05:01 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.octoprint: Could not setup all dependencies.
2018-01-07 21:05:01 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/level/status3: 0
2018-01-07 21:05:01 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/level/status4: 0
2018-01-07 21:05:01 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on tank/sumptemp: 76.55
2018-01-07 21:05:01 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on tank/tanktemp: 76.44
2018-01-07 21:05:01 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on tank/status: Offline
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/level/status1: 1
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/level/status2: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/alift/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/12volt/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/aux1/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/light/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/air/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/pump/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /tank/co2/status: 0
2018-01-07 21:05:02 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on /Stank/RGB: {"state":"ON","color":{"r":255,"g":255,"b":255},"brightness":90,"effect":"null"}
2018-01-07 21:05:02 WARNING (Thread-9) [homeassistant.components.emulated_hue] When targeting Google Home, listening port has to be port 80

I think this means two items are trying to use the same IP address on your network.

is my 3d printer

checked router all ips the same ?

Solved: My SSL certificate expired.

open port 80/80 on pi
open port 443/443 on pi

SSH into pi

cd certbot
./certbot-auto --no-self-upgrade renew

takes a long time on “installing python packages”

close 80/80 and 443/443 ports
open 443/8123