Error code: CE0557 At least one allowed role must be selected if the page is used from navigation or a button.

Hi all, I'm new to Mendix and I am building my first app, ‘Learn now Training Management’.  I can't run my app locally in Studio Pro as it still gives some errors, like the example in the title. Can someone please tell me what I have to do to fix this? Kind regards, Dennis  
1 answers

Hi Dennis, you need to check the properties of the pages (double click on an error, it will bring you to the page) and choose the role in ‘Visible for’ tab, specifying who is allowed to access this page.