oops

Author: DonJayamanne

src/vs/workbench/contrib/notebook/browser/diff/diffComponents.ts

@@ -1817,7 +1817,9 @@ export class ModifiedElement extends AbstractElementRenderer {
 	override dispose() {
 		// The editor isn't disposed yet, it can be re-used.
 		// However the model can be disposed before the editor & that causes issues.
-		this._editor!.setModel(null);
+		if (this._editor) {
+			this._editor.setModel(null);
+		}
 
 		if (this._editor && this._editorViewStateChanged) {
 			this.cell.saveSpirceEditorViewState(this._editor.saveViewState());