Update app.py

app.py

@@ -12,13 +12,14 @@ client = Groq(api_key=os.environ.get("GROQ_API_KEY"))
 
 # Google Sheets setup
 SCOPES = ['https://www.googleapis.com/auth/spreadsheets']
-SERVICE_ACCOUNT_FILE = os.environ.get("MY_SERVICE_ACCOUNT_JSON")
+SERVICE_ACCOUNT_JSON = os.environ.get("MY_SERVICE_ACCOUNT_JSON")
 SPREADSHEET_ID = os.environ.get("GOOGLE_SHEET_ID")
 
-service_account_info = json.loads(MY_SERVICE_ACCOUNT_JSON)
-credentials = Credentials.from_service_account_info(
-    service_account_info, scopes=SCOPES
-)
+if not SERVICE_ACCOUNT_JSON:
+    raise ValueError("MY_SERVICE_ACCOUNT_JSON environment variable is not set or empty.")
+
+service_account_info = json.loads(SERVICE_ACCOUNT_JSON)
+credentials = Credentials.from_service_account_info(service_account_info, scopes=SCOPES)
 service = build('sheets', 'v4', credentials=credentials)
 sheet = service.spreadsheets()