[Ifeffit] unable to export xdi file in xas viewer

[George Sterbinsky]

Hello,

When attempting to export an xdi file for a pre-edge peak fit in XAS
viewer, the error message below prints to the terminal and the xdi file is
not generated. I can provide the project file and instructions for
generating the error message if that would be helpful.

Thank you,
George


Traceback (most recent call last):
  File
"/anaconda3/lib/python3.7/site-packages/larch/wxxas/prepeak_panel.py", line
369, in onExportFitResult
    yerr=yerr, x=x)
  File
"/anaconda3/lib/python3.7/site-packages/larch/io/export_modelresult.py",
line 60, in export_modelresult
    delta_fit = result.eval_uncertainty(result.params, **kwargs)
  File "/anaconda3/lib/python3.7/site-packages/lmfit/model.py", line 1488,
in eval_uncertainty
    dval = pars[pname].stderr/3.0
TypeError: unsupported operand type(s) for /: 'NoneType' and 'float'
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