Update app.py

app.py

@@ -163,7 +163,7 @@ async def handle_action(request: Request):
                 player_found = True
                 # If gain permission is not available, then income has already been taken.
                 if not game["permissions"].get(player, {}).get("gain", True):
-                    raise HTTPException(status_code=403, detail="You already took coins, and cannot take income.")
+                    return {"success": False, "message": "You can only earn money once per turn."}
                 p["coins"] += 1
                 game["permissions"][player]["gain"] = False
                 return {"success": True, "message": f"Player {player} now has {p['coins']} coins."}