Your site doesn’t include support for the “kadence/rowlayout”
If you receive an error message:
Your site doesn’t include support for the “kadence/rowlayout” block. You can leave this block intact, convert its content to a Custom HTML, or remove it entirely. DO NOT ALTER IT
Head to the WordPress dashboard, then settings> Kadence Blocks
Make sure that all the Kadence blocks are activated (in the below example the Row Layout & Icon list need to be activated)
Once you go back to the page with the error message it should now load properly.