Barcodify - Customer Selector
  • Getting started
    • Introduction
    • Design mobile wallet passes
    • Share "app-generated" barcodes with customers
      • Share barcodes in person
      • Share barcodes via Shopify notifications
      • Share barcodes via bulk messaging services
      • Place barcodes on the customer page
    • Synchronise "merchant-issued" custom barcodes with the app
      • Enter barcodes individually
      • Import barcodes
      • Populate barcodes from customer metafield
    • Analytics
    • Add customers to the POS cart
    • Legacy (slower) ways to add customers
      • Shopify POS "Add customer" Smart Grid action
      • The app's Smart Grid actions
  • Troubleshooting
    • FAQs
      • Can I use one scanner to add products and customers?
      • What scanner should I get for customer barcodes?
    • Known issues & workarounds
      • "Add customer" POS extension no longer works
      • Expected a valid shop query parameter
      • Something went wrong. Please check your cart or try again.
  • Legal
    • Terms of Service
    • Privacy Policy
    • Sub-processors
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  1. Troubleshooting
  2. Known issues & workarounds

Expected a valid shop query parameter

Previous"Add customer" POS extension no longer worksNextSomething went wrong. Please check your cart or try again.

Last updated 1 year ago

This issue should no longer occur. However, if you know how to recreate it, I'd appreciate it if you could share your insights.

Sometimes, you may notice a black screen with the "Expected a valid shop query parameter" error. Generally, this occurs when the app authenticates the user.

To work around it, please open the app with the shop parameter populated in the address bar, i.e. add ?shop=mystorename.myshopify.com. For example, if your store's myshopify domain was galmis-test.myshopify.com, please open .

After successfully loading the app, the error should no longer occur.

https://galmis-test.myshopify.com/admin/apps/select-customer-with-barcode-1/auth?shop=galmis-test.myshopify.com