Update normalize.ts

packages/shopify/src/utils/normalize.ts

@@ -122,7 +122,7 @@ export function normalizeProduct({
           .filter((o) => o.name !== 'Title') // By default Shopify adds a 'Title' name when there's only one option. We don't need it. https://community.shopify.com/c/Shopify-APIs-SDKs/Adding-new-product-variant-is-automatically-adding-quot-Default/td-p/358095
           .map((o) => normalizeProductOption(o))
       : [],
-    ...(description && { description }),
+    description: description || '',
     ...(descriptionHtml && { descriptionHtml }),
     ...rest,
   }