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It is difficult to tell much from a picture. For better results, attach all of the VIs you are using, and attach any external files (such as 54.py). Error 1667: "LabVIEW: (Hex 0x683) The specified Python module could not be imported."
It appears that the Error is in the Python code (which the Original Poster still refuses to post except as a "picture" that cannot be edited, tested, etc.). If the Python code "throws an error" when called by LabVIEW, then the LabVIEW Error Code 1672, "There was an unknown error in the Python operation." makes perfect sense, and the Python program should be tested and debugged so that it does not cause this error. Note that running Python code from within LabVIEW may have its own quirks (to which I cannot speak, as I don't use Python) ...
I have had these issues on a script with a simple function that runs happily for hours on end.
When there is an error with the python itself it usually reports a more useful error from the python side. When this happens the entire python session seems kaput. I have gotten around this error by handling it, and in the case where it occurs I simply close the current python session and open a new one, and resume what I was doing before.
