Fixed level issues

app/controllers/abc/level.py

@@ -1,7 +1,7 @@
 from abc import ABC, abstractmethod
 
 from fastapi import UploadFile
-from typing import Dict
+from typing import Dict, Optional
 
 
 class ILevelController(ABC):
@@ -19,7 +19,7 @@ class ILevelController(ABC):
         pass
 
     @abstractmethod
-    async def upload_level(self, file: UploadFile):
+    async def upload_level(self, file: UploadFile, solutions: Optional[UploadFile] = None):
         pass
 
     @abstractmethod

app/controllers/abc/speaking.py

@@ -19,5 +19,5 @@ class ISpeakingController(ABC):
         pass
 
     @abstractmethod
-    async def pool_video(self, vid_id: str):
+    async def poll_video(self, vid_id: str):
         pass