Download the backup json as a file

src/sdk/Iframe.tsx

@@ -12,9 +12,6 @@ function Iframe({ showIframe = false }: IframeProps) {
     if (iframeRef.current) {
       IframeReference.setIframe(iframeRef.current);
     }
-    return () => {
-      IframeReference.setIframe(null);
-    };
   }, [iframeRef.current]);
 
   return (

src/sdk/IframeReference.ts

@@ -5,6 +5,11 @@ export default class IframeReference {
   private constructor() { }
 
   public static setTargetOrigin(targetOrigin: string): void {
+    if (this.targetOrigin) {
+      console.debug("targetOrigin is already set");
+      return;
+    }
+
     try {
       new URL(targetOrigin);
       this.targetOrigin = targetOrigin;

src/sdk/MessageBus.ts

@@ -809,17 +809,10 @@ export default class MessageBus {
     }
 
     try {
-      const iframe = IframeReference.getIframe();
-
-      if (event.source !== iframe.contentWindow) {
-        console.error('[MessageBus] handleMessage: source not match');
-        return;
-      }
-
       const targetOrigin = IframeReference.getTargetOrigin();
 
       if (event.origin !== targetOrigin) {
-        throw new Error('origin not match');
+        throw new Error(`origin don't match: expected ${targetOrigin}, got ${event.origin} with type ${event.data.type}`);
       }
 
       if (!event.data || typeof event.data !== 'object') {