Warning : Card The block can not be displayed correctly

Hello ,
I am facing the following warning, I do not understand what this is for?
And how is this solved?

Card
The block can not be displayed correctly.

It seems, some edit happend in the workspace which didnt configure properly. click on edit (which near the create workspace button) and remove the card block under the settings or configure it properly.

Please guide me step by step, I am new to this erpnext and frappe.