How to fix "Unknown 'Content\BlankSlate' Source Block in Content\BlankSlate"
Application Type
Service Studio Version
11.10.5 (Build 37061)

I created a new application and started working on adding pages. I'd like to check my progress but I can't until I resolve an error that occurs in a screen I didn't create or touch.

 In the Interface section, under the UI Flows/Common is a screen "InvalidPermissions" which has an error:

Required Property Value       Unknown 'Content\BlankSlate' Source Block in Content\BlankSlate 

I tried to find Content or BlankSlate in Forge and then in Forum, but none of the results helped, as far as I could tell, at least, judging by the snippets shown after the search.

I'm guessing that the source block Content\BlankSlate should be imported from somewhere, but how do I find where to get it? This is all from the stuff preloaded when I created my new application, kind of frustrating that it didn't quite pull in everything necessary.

Rank: #187

Hi Richard, what you are looking for is here:

Click on Manage Dependences and go to OutsystemUi -> Content -> blackState

Hope I could help you


Carlos Lessa

Rank: #72

Hi Richard,

Not sure how this happened.

BlankSlate is a UI Pattern you can add as a dependency from the OutSystemsUI module.
Just click ‘Manage Dependencies’ inside Service Studio, search for OutSystemsUI and select the BlankSlate widget under the Content UI Flow.

Hope this helps!


EDIT: I see Carlos has beat me to it!