An Exception happens when run with -w option

[nixlong]

when run it with the -w option like this ：

python3.6 japonicus-run -gw --strat XXXX

the exception happens:

`WEBSERVER MODE

• Serving Flask app "promoterz.webServer.core" (lazy loading)
• Environment: production
  WARNING: Do not use the development server in a production environment.
  Use a production WSGI server instead.
• Debug mode: on
  Exception in thread Thread-1:
  Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
  self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
  self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 943, in run
  run_simple(host, port, self, **options)
  File "/usr/local/lib/python3.6/dist-packages/werkzeug/serving.py", line 812, in run_simple
  reloader_type)
  File "/usr/local/lib/python3.6/dist-packages/werkzeug/_reloader.py", line 267, in run_with_reloader
  signal.signal(signal.SIGTERM, lambda *args: sys.exit(0))
  File "/usr/lib/python3.6/signal.py", line 47, in signal
  handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))
  ValueError: signal only works in main thread
  `

how to fix it, pls help me, thx

[Gab0]

Hey @nixlong, are you sure the webserver deps (dash, plotly and stuff) are updated to latest?
Maybe even something broke on the newer updates.
If the issue persists paste your versions here.
cheers!

[nixlong]

hi @Gab0 :
my env:

1. python 3.6 (pip 18.1 from py3.6)
2. Gekko : v0.6.6 / branch stable
3. japonicus : latest (0.91)
4. other deps:

$ pip list | grep plotly
plotly 3.3.0

$ pip list | grep dash
dash 0.21.1
dash-core-components 0.22.1
dash-html-components 0.10.1
dash-renderer 0.14.1

thx

[Gab0]

Hey, try with those (in order of importance)
Flask 1.0.2
dash 0.26.2
plotly 3.1.1
dash-core-components 0.28.1
dash-html-components 0.11.0
dash-renderer 0.13.2