If you are getting missing image errors in your products while publishing them on Etsy, then you must have to provide the images from the Shopify store. After proving the image you need to update the changes on Etsy by following these steps:

• Visit the 'All Products' section under the 'Products'.
• Select the products for which you want to update the images by clicking on the checkboxes in front of the products.
• Choose the option 'Update Image' from the drop-down menu.
• Proceed with the Submit button.
  
  

This will update the images for your products on Etsy.