Update main.py

main.py

@@ -54,7 +54,8 @@ async def server_1():
     try:
         searchduck = DuckDuckGoSearchResults(output_format="list", max_results=5, num_results=5)
         duck_results = searchduck.invoke(query_sentence)
-        all_results = duck_results
+        if type(duck_results) == list :
+            all_results = duck_results
     except:
         print("An exception occurred")
         duck_results = []
@@ -68,8 +69,9 @@ async def server_1():
     )
     try:
         google_results = search.results( query_sentence , 10 )
-        print("type(duck_results)") ; print(type(duck_results)) ; print(type(google_results)                                                                   
-        all_results = all_results + google_results
+        print("type(duck_results)") ; print(type(duck_results)) ; print(type(google_results)
+        if type(google_results) == list :
+            all_results = all_results + google_results
     except:
         print("An exception occurred")