Error ‘you must provide one of first or last’

Hi,

I am facing a problem with the S2W plugin. The issue is with importing customers while importing products works perfectly, importing customers gives the following error: “You must provide one of first or last.”

It would be great if you could let me know why this error is occurring and how to resolve it effectively so that we can import customers from the Shopify store to the WordPress/WooCommerce website.