Error message

Notice: Undefined index: in_stock in views_handler_filter->store_exposed_input() (line 1395 of /home/sanmarcofurnitur/public_html/sites/all/modules/contrib/views/handlers/views_handler_filter.inc).
Schengen pouf
In stock
$750.00
soft pillow
In stock
$0.00
Chester pouf
In stock
$750.00
Schengen table
In stock
$900.00