udpate

src/scene/scene.service.ts

@@ -528,7 +528,7 @@ export class SceneService implements OnModuleInit, OnModuleDestroy {
       if (typeof message === 'string') {
         // wasm:特例, requestIframe
         if (message.includes('wasm:')) {
-          const parseData = message
+          const parseData = message?.length
             ? message.replace('wasm:', '')
             : `{"MstType":1}`;
           const msg: RTCMessageRequest = JSON.parse(parseData);