During customer checkout error : error code PE106

I am trying test mode checkout. My website is mahezon.com.when I checkout it gives error

An error has occured during checkout

Please contact the seller and reference code the error code below.

Error code PE106

I am using printify for fullfillment.

Thanks

Mahesh Yadav

Hi Mahezon05

Can you check this link. i think this is help you.

https://community.shopify.com/c/Payments-Shipping-Fulfillment/2chekout-ERROR-CODE-PE102/td-p/317662

If helpful then please Like and Accept Solution.
Shopify theme and app developer.
Skype: live:hardikradadiya355
Thanks