Passing data to Labview gives NoneType

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Passing data to Labview gives NoneType - amasta - Mar-18-2019

Hello, I am trying to run some Python code through Labview involving the lmfit module. The minimize() function of the lmfit module outputs a Parameter() object containing the fitting results. The data in this object can, for example, be called using

self.params['A'].value

This gives the value of fitting parameter A. So far so good. Passing this to labview as a float data type works. However when I try to pass the standard devation value from the Parameter() object using

self.params['A'].stderr

Labview then gives the following error:

Error:Python returned the following error: <class 'TypeError'>
must be real number, not NoneType

However, executing the exact same code in Spyder does give the correct stderr value, while Labview stated there is a NoneType. What seems to be the problem here? How can the value from example 1 be okay, while stderr from example 2 not Think