Hi Team,
after I downgraded the page builder again my page is not displayed any more but shows error message: "Attempt to assign property "cssClassName" on array"
https://k4.arkiadesign.de/de/produkte/produkte-uebersicht.html
and here
https://k4.arkiadesign.de/en/products/products-overview.html
these are the 2 pages i worked on with V4 page builder
what to do?