I am trying to analyze vasp results (OUTCAR) using on VNL using OUTCAR file. I am; however, getting an error
saying "Unable to subtract physical quantity with None that has type :" I was wondering how can I fix this issue. I have made sure to include other outputs(PCDAT,OSZICAR,POTCAR...) in the folder containing OUTCAR.
Below are the details for the error:
"
Traceback (most recent call last):
File "./zipdir/NL/GUI/MainWindow/LabFloor/LabFloorModel.py", line 234, in load
File "/Users/quantum/git/quantumsource/python/src/AddOns/VASPPlugins/VASPLabFloorPlugin.py", line 331, in load
File "/Users/quantum/git/quantumsource/python/src/AddOns/VASPPlugins/Analysis.py", line 359, in createVASPMDTrajectory
File "/Users/quantum/git/quantumsource/python/src/AddOns/VASPPlugins/Analysis.py", line 292, in finiteDifferenceVelocities
File "./zipdir/NL/CommonConcepts/PhysicalQuantity.py", line 996, in __rsub__
NLValueError: Unable to subtract physical quantity with None that has type : <type 'NoneType'>."
