ioHub and DataStore on Linux: `RPC_ATTRIBUTE_ERROR` and `decoding str is not supported`

[rphlypo]

Below is the output I have when running psychopy/demos/coder/iohub/launchHub.py, no idea about how to further deal with the error messages telling decoding str is not supported whenever trying to access the DataStore. Anyone with an idea on where to look into?

Running testWithNoKwargs Test:
pygame 2.0.0 (SDL 2.0.12, python 3.6.11)
Hello from the pygame community. https://www.pygame.org/contribute.html

 ** PRESS A KEY TO CONTINUE.....
gA Keyboard Event was Detected; exiting Test.
ioHub Server Process Completed With Code:  0
Test Result:  None

------------------------------------

Running testUsingPsychoPyMonitorConfig Test:
Display Psychopy Monitor Name:  testMonitor
Display Default Eye Distance:  570.0
Display Physical Dimensions:  {'width': 300.0, 'height': 168.75, 'unit_type': 'mm'}
ioHub Server Process Completed With Code:  0
Test Result:  None

------------------------------------

Running testEnabledDataStore Test:
RPC_ATTRIBUTE_ERROR
Traceback (most recent call last):
  File "/home/rphlypo/miniconda3/envs/psychopy/lib/python3.6/site-packages/psychopy/iohub/server.py", line 108, in handle
    result = getattr(self, unicode(callable_name, 'utf-8'))
TypeError: decoding str is not supported
RPC_ATTRIBUTE_ERROR
Traceback (most recent call last):
  File "/home/rphlypo/miniconda3/envs/psychopy/lib/python3.6/site-packages/psychopy/iohub/server.py", line 108, in handle
    result = getattr(self, unicode(callable_name, 'utf-8'))
TypeError: decoding str is not supported
Display Psychopy Monitor Name:  testMonitor
Display Default Eye Distance:  570.0
Display Physical Dimensions:  {'width': 300.0, 'height': 168.75, 'unit_type': 'mm'}
Experiment Metadata: 
{'code': 'gap_endo_que',
 'description': '',
 'experiment_id': 'C',
 'title': '',
 'total_sessions_to_run': 0,
 'version': ''}

Session Metadata: 
{'code': 'S_07_12_2020_16_18',
 'comments': '',
 'name': '',
 'session_id': 'C',
 'user_variables': {}}
ioHub Server Process Completed With Code:  0
Test Result:  None

------------------------------------

Running testEnabledDataStoreAutoSessionCode Test:
Current Session Code will be:  S_1607354282
RPC_ATTRIBUTE_ERROR
Traceback (most recent call last):
  File "/home/rphlypo/miniconda3/envs/psychopy/lib/python3.6/site-packages/psychopy/iohub/server.py", line 108, in handle
    result = getattr(self, unicode(callable_name, 'utf-8'))
TypeError: decoding str is not supported
RPC_ATTRIBUTE_ERROR
Traceback (most recent call last):
  File "/home/rphlypo/miniconda3/envs/psychopy/lib/python3.6/site-packages/psychopy/iohub/server.py", line 108, in handle
    result = getattr(self, unicode(callable_name, 'utf-8'))
TypeError: decoding str is not supported
Display Psychopy Monitor Name:  testMonitor
Display Default Eye Distance:  570.0
Display Physical Dimensions:  {'width': 300.0, 'height': 168.75, 'unit_type': 'mm'}
Experiment Metadata: 
{'code': 'gap_endo_que',
 'description': '',
 'experiment_id': 'C',
 'title': '',
 'total_sessions_to_run': 0,
 'version': ''}

Session Metadata: 
{'code': 'S_1607354282',
 'comments': '',
 'name': '',
 'session_id': 'C',
 'user_variables': {}}
ioHub Server Process Completed With Code:  0
Test Result:  None

[isolver]

I can also now reproduce this on win10. Will fix this week.

[isolver]

This should now be working.