diff --git a/src/Logic/UIEventSource.ts b/src/Logic/UIEventSource.ts
index c9f5f2f3d0..4d8812b8da 100644
--- a/src/Logic/UIEventSource.ts
+++ b/src/Logic/UIEventSource.ts
@@ -121,7 +121,7 @@ export class Stores {
         }
         src.addCallbackD((contents) => {
             for (let i = 0; i < contents.length; i++) {
-                sources[i].setData(contents[i])
+                sources[i]?.setData(contents[i])
             }
         })
         return src
diff --git a/src/UI/BaseUIElement.ts b/src/UI/BaseUIElement.ts
index f7e87f38fe..aef860aa13 100644
--- a/src/UI/BaseUIElement.ts
+++ b/src/UI/BaseUIElement.ts
@@ -73,9 +73,6 @@ export default abstract class BaseUIElement {
         return this
     }
 
-    /**
-     * The same as 'Render', but creates a HTML element instead of the HTML representation
-     */
     public ConstructElement(): HTMLElement {
         if (typeof window === undefined) {
             return undefined