[Ifeffit] Issue about plotting simulated EXAFS in Larix

Dear Matt, I am trying to simulate a theoretical EXAFS with a DFT calculated CIF file via Larix. I performed a FEFF calculation on the CIF file and imported a path to the FEFF fitting panel. However, I didn't get any results when I clicked on the "Plot Current Model" bottom. I get the following error message: TypeError: unsopported format string passed to NoneType.__format__. Could you please help me? Thank you in advance. Best regards, Aowen