TypeError: Object of type 'DataFrame' is not JSON serializable
Your df is still a data frame because you haven't assigned it as json.
df = df.to_json()This should work. Let me know if not.
df = pd.read_csv(data)return_data = { "status": 1, "message": "Raw Data List with pagination", "data": { "is_header": is_header, "head": **json.loads(df.head().to_json())** }}