AttributeError: 'NoneType' object has no attribute 'get' in eyetracking calibration

Builder
1

OS (e.g. Win10): Win 10
PsychoPy version (e.g. 1.84.x): 2023.2.3

I tried to connect Tobii Pro Fusion, and used just the Calibration to test. I got the following error message, ideas?

### Running: C:\Users\super\Desktop\PsychoPyExp\eye2023.2.3\test_lastrun.py ####
pygame 2.1.0 (SDL 2.0.16, Python 3.8.10)
Hello from the pygame community. https://www.pygame.org/contribute.html
No Tobii license_file in config. Skipping.
    *** ERROR ADDING EVENT CLASS MAPPING: Could not find class: EYE_SAMPLE = 59
Error during runSetupProcedure
Traceback (most recent call last):
  File "C:\Users\super\AppData\Roaming\psychopy3\packages\psychopy-eyetracker-tobii\psychopy_eyetracker_tobii\tobii\eyetracker.py", line 203, in runSetupProcedure
    genv = TobiiCalibrationProcedure(self, calibration_args)
  File "C:\Users\super\AppData\Roaming\psychopy3\packages\psychopy-eyetracker-tobii\psychopy_eyetracker_tobii\tobii\calibration.py", line 18, in __init__
    BaseCalibrationProcedure.__init__(self, eyetrackerInterface, calibration_args, allow_escape_in_progress=True)
  File "C:\Program Files\PsychoPy\lib\site-packages\psychopy\iohub\devices\eyetracker\calibration\procedure.py", line 51, in __init__
    unit_type = self.getCalibSetting('unit_type')
  File "C:\Program Files\PsychoPy\lib\site-packages\psychopy\iohub\devices\eyetracker\calibration\procedure.py", line 94, in getCalibSetting
    return calibration_args.get(setting[-1])
AttributeError: 'NoneType' object has no attribute 'get'
2

Hi @Jun_Fang,

Could you please share some screenshots of how you’ve entered the details of your Tobii in the Eyetracker tab of Experiment Settings?

Thanks so much,

Kim

3

Hi Kim,

Thanks for the reply.
The info that I put in Settings are
device: Tobii Pro Fusion
rate: 120

The other settings are optional, I have tried to put down the serial number, but still the error message.

FYI, I have tried to connect Tobii Pro Fusion with PsychoPy in the past few weeks. I have reported on PsychoPy Github page on the issues that I encountered. For example, these two issues (links below) have been resolved in the most recent release (2023.2.3). But the first issue “no such file default_eyetracker.yaml”, in the 2023.2.3 release, the yaml file is uploaded, but not in the correct directory. It should be ‘C:\Program Files\PsychoPy\lib\site-packages\psychopy\iohub\devices\eyetracker\hw\tobii\default_eyetracker.yaml’, which I manually moved the files to. Then I got another error message stated in the post.

Currently, I have downgraded to PsychoPy 2023.1.8, which is the version before making Eyetrackers as plugins. It worked fine with my experiment (with the same setting).