Cannot read properties of undefined (reading 'selectedStep'): (microsoft#276097) (microsoft#278802)

Author: bpasero

src/vs/workbench/contrib/welcomeGettingStarted/browser/gettingStarted.ts

@@ -1533,7 +1533,7 @@ export class GettingStartedPage extends EditorPane {
 		buildStepList();
 
 		this.detailsPageDisposables.add(this.contextService.onDidChangeContext(e => {
-			if (e.affectsSome(contextKeysToWatch) && this.currentWalkthrough) {
+			if (e.affectsSome(contextKeysToWatch) && this.currentWalkthrough && this.editorInput) {
 				buildStepList();
 				this.registerDispatchListeners();
 				this.selectStep(this.editorInput.selectedStep, false);