error when running visualize.py

[iipeace]

@yoonje,
when I run visualize.py on MacBook M1 Pro,
a below error occurred.

I used recent Guider source (https://github.com/iipeace/guider),
but the result was same when I used common/guider.py in https://github.com/guiderOrg/visualizer.

iipeace@Peaceui-MacBookPro visualizer % python3 visualize.py 999       
visualize.py:12: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if cmd is None or cmd is '' or target_addr is None or target_addr is '':
visualize.py:12: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if cmd is None or cmd is '' or target_addr is None or target_addr is '':

[Info] use 192.168.200.183:54753(UDP) as local address

[Info] use 192.168.200.183:999(UDP) as remote address

[Info] use 192.168.200.183:999(TCP) as remote address
Expecting value: line 1 column 1 (char 0) 

[yoonje]

The visualizer relies on guider for socket communication. I think there is a problem with the guider code.

Please check GuiderInstance.set_network_manager(target_addr) in visualizer.py.

[iipeace]

I checked visualize.py printing system stats in JSON format with latest Guider.
But Grafana graph isn't shown in web browser.
Could you check it?