Update app.py

app.py

@@ -89,9 +89,9 @@ def start_threads(prompt):
     t2.start()
     print (t1)
     print (t2)
-    a1,a2=t1
-    b1,b2=t2
-    return a1,a2
+    a1,a2=t1.result()
+    b1,b2=t2.result()
+    yield a1,a2
             
 css="""
 .grid_class{