Update app.py

app.py

@@ -268,6 +268,11 @@ async def add_text(char1,char2,runs,context,initial_question,history):
     last_question=None
     # todo build a context from dropdown
     returned_history = ""
+    unnamed_question="This weird guy did not input anything.. so, tell me a joke!"
+    if initial_question is None: 
+        initial_question = unnamed_question 
+    if initial_question=="":
+        initial_question = unnamed_question
     for i in range(int(runs)+1):
         print("char1:",char1," :", initial_question)
         returned_history += char1 + " : " + initial_question + "\n"