do not crash if a widget tries to update widget on non-existent view

- closes #327

README.md

@@ -264,6 +264,7 @@ E.g., if it was used in a menu and the menu is red, the circle would be red.
 ### **WORK IN PROGRESS**
 * (foxriver76) fixed resizing issue for relative widgets
 * (foxriver76) do not crash when using visibility "only for groups"
+* (foxriver76) do not crash if a widget tries to update widget on non-existent view
 
 ### 2.9.24 (2024-01-24)
 * (foxriver76) Image 8 widget ported to react

src/src/Store.tsx

@@ -31,10 +31,22 @@ const reducer = createReducer(
             })
             .addCase(updateWidget, (state, action) => {
                 const { viewId, widgetId, data } = action.payload;
+
+                if (!(viewId in state.visProject)) {
+                    console.error(`Cannot update widget "${widgetId}". The view "${viewId}" does not exist in the project.`);
+                    return;
+                }
+
                 state.visProject[viewId].widgets[widgetId] = data;
             })
             .addCase(updateGroupWidget, (state, action) => {
                 const { viewId, widgetId, data } = action.payload;
+
+                if (!(viewId in state.visProject)) {
+                    console.error(`Cannot update group widget "${widgetId}". The view "${viewId}" does not exist in the project.`);
+                    return;
+                }
+
                 state.visProject[viewId].widgets[widgetId] = data;
             })
             .addCase(updateActiveUser, (state, action) => {