Biobakery_workflow wmgx_vis not generating several plot (using toyset)

I am currently using an example data that is illustrated here: Installing the workflows with pip · biobakery/biobakery_workflows Wiki · GitHub

and run biobakery_workflow wmgx_vis.
However, the result pdf file does not have several plots: PcoA, Heatmaps, Pathway and ECs Abundance plots (link to my pdf file).

Why is this happening? There was no error messages during the process besides
Exception: Invalid shape (0,) for image data Error messages will be included in output document