The error may indicate that there is an issue with your internet connection. You could try the following troubleshooting steps:
1. Check your internet connection and ensure that you have a stable connection. 2. Clear your browser cache and cookies and try to access the Google Sales Channel again. 3. Try accessing the Google Sales Channel from a different web browser or device.
Let me know how you get on!
Moira | Social Care @ Shopify - Was my reply helpful? Click Like to let me know! - Was your question answered? Mark it as an Accepted Solution - To learn more visit the Shopify Help Center or the Shopify Blog