Prevents error in case of inexistant trivia list

cogs/trivia.py

@@ -176,7 +176,9 @@ class TriviaSession():
         await trivia_manager.bot.say(t)
 
     async def check_answer(self, message):
+        if message.author.id != trivia_manager.bot.user.id:
             self.timeout = time.perf_counter()
+            if self.current_q is not None:
                 for answer in self.current_q["ANSWERS"]:
                     if answer in message.content.lower():
                         self.current_q["ANSWERS"] = []