text: Title: Lost remote browser access
  Body: Not sure what happened but cannot access mycodo through the browser anymore and get  this error message:
  
  Version: 8.12.9 
  Database: 0187ea22dc4b 
  Model: Raspberry Pi 3 Model B Rev 1.2
  
  Release:
  Distributor ID: Raspbian
  Description: Raspbian GNU/Linux 10 (buster)
  Release: 10
  Codename: buster
  
  Firmware:
  Dec 1 2021 15:08:00 
  Copyright (c) 2012 Broadcom
  version 71bd3109023a0c8575585ba87cbb374d2eeb038f (clean) (release) (start_x)
  
  Error (Full Traceback):
  
  Traceback (most recent call last):
    File "/var/mycodo-root/env/lib/python3.7/site-packages/flask/app.py", line 2073, in wsgi_app
      response = self.full_dispatch_request()
    File "/var/mycodo-root/env/lib/python3.7/site-packages/flask/app.py", line 1519, in full_dispatch_request
      return self.finalize_request(rv)
    File "/var/mycodo-root/env/lib/python3.7/site-packages/flask/app.py", line 1540, in finalize_request
      response = self.process_response(response)
    File "/var/mycodo-root/env/lib/python3.7/site-packages/flask/app.py", line 1888, in process_response
      self.session_interface.save_session(self, ctx.session, response)
    File "/var/mycodo-root/env/lib/python3.7/site-packages/flask_session/sessions.py", line 367, in save_session
      total_seconds(app.permanent_session_lifetime))
    File "/var/mycodo-root/env/lib/python3.7/site-packages/cachelib/file.py", line 147, in set
      self._prune()
    File "/var/mycodo-root/env/lib/python3.7/site-packages/cachelib/file.py", line 87, in _prune
      if self._threshold == 0 or not self._file_count > self._threshold:
    File "/var/mycodo-root/env/lib/python3.7/site-packages/cachelib/file.py", line 58, in _file_count
      return self.get(self._fs_count_file) or 0
    File "/var/mycodo-root/env/lib/python3.7/site-packages/cachelib/file.py", line 127, in get
      return pickle.load(f)
  EOFError: Ran out of input
  
  
  
  I am running off master so kot sure if this has something to do with it