Update app.py

app.py

@@ -57,6 +57,7 @@ async def convert_currency(amount: float, from_currency: str, to_currency: str):
         from_rate = rates["conversion_rates"][from_currency]
         to_rate = rates["conversion_rates"][to_currency]
         converted_amount = amount * (to_rate / from_rate)
+        converted_amount = str(converted_amount)
         return {"converted_amount": converted_amount}
     except KeyError:
         return {"error": "Invalid currency code"}