Square Item Library exports have the same holes. You do not need an app.

Blank SKU, $0 price, no Image URL, two rows sharing a SKU. Export the Item Library CSV and check it in the browser.

Open the CSV check

How

1. Square Dashboard → Items → Item Library → Actions → Export items (CSV with SKU, Item Name, Price, Image URL).
2. Open csv-check.html and drop the file. Nothing is uploaded.
3. Fix the rows that cannot sell. A ranked Monday list of 20 is the Store Audit (USD $149) — email the same CSV to info@shopgaps.com.

ShopGaps is not a Square app and does not connect to Dashboard. WooCommerce merchants who want an on-site plugin can use Catalog Audit.