Technical Error in Fiori Elements Tutorial: 'true Incidents' is of type string, expected boolean

[EA]

Tutorials: https://developers.sap.com/tutorials/fiori-tools-cap-create-application.html
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I am following the Fiori Elements tutorial: Generate an SAP Fiori Elements Application based on a CAP-based Service | Tutorials for SAP Develope....

All has gone smoothly till launching the app tile (Step 2.4) which results in a technical error:

"true Incidents " is of type string, expected boolean for property "headerVisible" of Element sap.ui.mdc.Table#sap.fe.demo.incidents::IncidentsList--fe::table::Incidents::LineItem

See attachment.

Can anyone help? Thanks!

[EA]

Came back after some hours. Started the Dev space which had stopped running and app had no error this time around.