feat: set default backend url

server/src/workflow-management/scheduler/index.ts

@@ -223,7 +223,7 @@ export async function handleRunRecording(id: string, userId: string) {
       throw new Error('browserId or runId or userId is undefined');
     }
 
-    const socket = io(`${process.env.BACKEND_URL}/${browserId}`, {
+    const socket = io(`${process.env.BACKEND_URL ? process.env.BACKEND_URL : 'http://localhost:8080'}/${browserId}`, {
       transports: ['websocket'],
       rejectUnauthorized: false
     });