i have created a sheduale action with this function

for rec in records:
  quant_obj = rec.env['stock.quant']
  hq_location = rec.env.ref('stock.stock_location_stock')
  quant_qty_available = quant_obj._get_available_quantity(rec, hq_location)
  if rec.website_block:
    rec.write({'is_published': False})
  elif rec.inventory_availability == 'never':
    rec.write({'is_published': True})
  else:
    if quant_qty_available <= rec.available_threshold:
        rec.write({'is_published': False})
    else:
        rec.write({'is_published': True})

it is supposed to check availability in main location and unpublish if not available.

it doent work when i try to run it manually in scheduled action screen but it work perfectly if i changed it to server action and activate it from action button,

Does any one know what am doing wrong?