fix: get_new_users_month - use 'created_at' instead of non-existent 'created_date' column in users table

dashboard_for_sage/load_dashboard.py

@@ -229,7 +229,7 @@ async def get_new_users_month(request):
     month_start = datetime.now().strftime('%Y-%m-01')
     async with get_sor_context(env, 'sage') as sor:
         sql = """
-            SELECT COUNT(*) as cnt FROM users WHERE created_date >= ${month_start}$
+            SELECT COUNT(*) as cnt FROM users WHERE created_at >= ${month_start}$
         """
         recs = await sor.sqlExe(sql, {'month_start': month_start})
         cnt = int(recs[0].get('cnt', 0)) if recs else 0