Running on Raspberry Pi 3 and Pi-camera on Raspian buster latest. When testing the MMM-Face_Reco-DDN facerecognition.py module stand alone, faces are correctly identified in the camera and [names] output. However, when running from MagicMirror, the error occurs, and it looks like it is complaining about improper use of a boolean operator in the code. I don’t know python data class rules, but if this was a code issue, surely others woudl have seen it in this module? Do I maybe have a lost data class object or something? PythonSherrError: TypeError: ‘<’ not supported between instances of ‘numpy.ndarray’ and ‘str’ is received, and the python traceback seems to point to the facerecognition.py module.```

[ERROR]  Whoops! There was an uncaught exception...
[2020-07-20 13:16:36.029] [ERROR]  PythonShellError: TypeError: '<' not supported between instances of 'numpy.ndarray' and 'str'
    at PythonShell.parseError (/home/pi/MagicMirror/modules/MMM-Face-Reco-DNN/node_modules/python-shell/index.js:246:21)
    at terminateIfNeeded (/home/pi/MagicMirror/modules/MMM-Face-Reco-DNN/node_modules/python-shell/index.js:129:32)
    at ChildProcess.<anonymous> (/home/pi/MagicMirror/modules/MMM-Face-Reco-DNN/node_modules/python-shell/index.js:121:13)
    at ChildProcess.emit (events.js:200:13)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
    ----- Python Traceback -----
    File "modules/MMM-Face-Reco-DNN/tools/facerecognition.py", line 143, in <module>
      if minDistance < args["tolerance"]: {
  traceback: 'Traceback (most recent call last):\n  File ' +
    '"modules/MMM-Face-Reco-DNN/tools/facerecognition.py", line ' +
    '143, in <module>\n    if minDistance < args["tolerance"]:\n' +
    "TypeError: '<' not supported between instances of " +
    "'numpy.ndarray' and 'str'\n",
  executable: 'python3',
  options: null,
  script: 'modules/MMM-Face-Reco-DNN/tools/facerecognition.py',
  args: [
    '--cascade=modules/MMM-Face-Reco-DNN/tools/haarcascade_frontalface_default.xml',
    '--encodings=modules/MMM-Face-Reco-DNN/tools/encodings.pickle',
    '--usePiCamera=1',
    '--source=0',
    '--rotateCamera=0',
    '--method=dnn',
    '--detectionMethod=hog',
    '--interval=2000',
    '--output=0',
    '--extendDataset=False',
    '--dataset=modules/MMM-Face-Reco-DNN/dataset/',
    '--tolerance=0.6'
  ],
  exitCode: 1

@majik655 Thank-you, and interesting that you mentioned the MMM-Face-Reco-DDN module, because I gave up on the OCV3 module and moved to the DDN module. But, I’m getting an error in it that looks to be complaining about the use of a boolean operator (<) between different data types. The base facerecognition.py works just fine stand alone. But, when running with MagicMirror, the error occurs.

I’m working a new install of MagicMirror MMM-Facial-Recognition-OCV3 module on Raspberry Pi Buster 10 with CV2 version 4.3.0. When running the training module, it ends with the message FATAL: OpenCV Major Version must be 3. Is there a known fix without backing CV2 back to version 3.x?