fixed byte12 error

app.py

@@ -227,11 +227,12 @@ def refresh_access_token(refresh_token:Token, authorization: str = Header(...)):
     token = authorization.split("Bearer ")[-1]
     
       
-    decoded_user_id,decoded_access_token = decode_jwt(token) 
-    is_valid = verify_refresh_access_token(db_uri=MONGO_URI, user_id=decoded_user_id, access_token=decoded_access_token,refresh_token=refresh_token.refreshToken)
-    if is_valid != True:  # Example check
-        raise HTTPException(status_code=401, detail="Invalid token")
-    try:
+    decoded_user_id,decoded_access_token = decode_jwt(token)
+    try: 
+        is_valid = verify_refresh_access_token(db_uri=MONGO_URI, user_id=decoded_user_id, access_token=decoded_access_token,refresh_token=refresh_token.refreshToken)
+        if is_valid != True:  # Example check
+            raise HTTPException(status_code=401, detail="Invalid token")
+        
         new_access_token = create_accessToken(db_uri=MONGO_URI,user_id=decoded_user_id,refresh_token=refresh_token.refreshToken)
         update_refreshTokenWithPreviouslyUsedAccessToken(db_uri=MONGO_URI,refresh_token=refresh_token.refreshToken,access_token=new_access_token)
         newly_encoded_access_token = encode_jwt(user_id=decoded_user_id,access_token=new_access_token)