Intercart requires app proxy url as "/a/s", verify if any app occupies "/a/s".

How would I know Intercart app proxy URL?

     1. in Shopify Apps: Intercart "View details"

     2. A pop up window will appear. Scroll down to the bottom the see the App Proxy URL. This time it is /a/s/

3. If Intercart app proxy URL is not "/a/s", find & modify the other app using app proxy "/a/s"; then update Intercart app proxy URL to "/a/s"

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