Some Slab blocks need a selected Shopify object before they can render any content in the theme editor. This is common with blocks that display a product, collection, article, or similar resource.
If no object has been selected yet, the block may appear empty or show a warning message instead.
Some blocks are designed to pull content from a specific object. Until that object is selected, the block does not have any data to display.

Merchants may see a warning such as Select a product to display. in the theme editor. This message is only shown while setting up the block and will never be shown to customers on the storefront.
If you see this warning:
Once the object is selected, the block should begin rendering normally in the theme editor.
Start by connecting your source repository and choosing the pages you want to publish.
You can then browse your documentation and ask questions about the content your team has shared.