GPA module not executing

Operating system: Mac OS
Slicer version: 5.6.0
Expected behavior: Trying to execute GPA+PCA
Actual behavior: wont run!

Hi! I have used ALPACA to get landmarks for 9 species and I selected these files in the GPA module as mark.json files. I selected my output folder. However when I hit execute nothing is happening, any thoughts?

Please open the log file (CTRL/CMD + 0), and copy and paste the full log file.

Also you are using an older version of the SLicer. Please install the current stable (5.6.1) and retry.

I encountered similar issues whilst using .mrk.json files but resolved the issues after changing format (saving new files as fcsv)
Isn’t supposed to work with both file formats though ?
Thanks and having a great time with slicermorph thus far !