Fixed group add event

blueprints/teacher.py

@@ -1,10 +1,16 @@
-from vkwave.bots import DefaultRouter, SimpleBotEvent, simple_bot_message_handler, PayloadContainsFilter, BotEvent
+from vkwave.bots import DefaultRouter, SimpleBotEvent, simple_bot_message_handler, PayloadContainsFilter, BotEvent, \
+    EventTypeFilter
+from vkwave.types.bot_events import BotEventType
+
 import locales
 
 teacher_router = DefaultRouter()
 
 
-@teacher_router.registrar.with_decorator(PayloadContainsFilter("teacher"),)
+@teacher_router.registrar.with_decorator(
+    EventTypeFilter(BotEventType.MESSAGE_NEW.value),
+    PayloadContainsFilter("teacher"),
+)
 async def teacher_menu(event: BotEvent):
     sevent = SimpleBotEvent(event)
     return await sevent.answer(