Update app.py

app.py

@@ -319,10 +319,15 @@ def create_access_token(data: dict, expires_delta: timedelta = timedelta(minutes
 def verify_token(token: str = Depends(oauth2_scheme)):
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        return payload.get("sub")
+        user_email = payload.get("sub")
+        if user_email is None:
+            raise HTTPException(status_code=401, detail="Invalid authentication credentials")
+        return user_email
     except jwt.ExpiredSignatureError:
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Token has expired")
-
+        raise HTTPException(status_code=401, detail="Token has expired")
+    except jwt.PyJWTError:
+        raise HTTPException(status_code=401, detail="Could not validate credentials")
+        
 def validate_token(token: str):
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])