Software error:

SQL fail: Unknown column 'p.mark' in 'field list'
Query: select l.*, s.header as subotr_header, o.header as otr_header,                         u.firm, u.email, u.contact, (now() between startdate and stopdate) as can_offer,                         (now()<startdate) as offer_future, (now()>stopdate) as offer_end,                         (now()<t_start) as trade_future, (now()>t_end) as trade_end,                         (now() between t_start and t_end) as can_trade, p.mark,                         p.volume, p.usl_volume, volume_types.header as v_type,p.pricecap,                         valutes.header as valute_name,                         usl_opl_types.header as o_type,                         usl_post_types.header as p_type,                         u.show_name                 from katalog_1 as l left join subotr as s on l.subotr=s.id                 left join otr as o on l.otr=o.id                 left join owner as u on l.owner_id=u.owner_id                 left join lot as p on l.product=p.product                 left join volume_types on p.usl_volume=volume_types.id                 left join valutes on l.valuta=valutes.id                 left join usl_opl_types on l.usl_opl=usl_opl_types.id                 left join usl_post_types on l.usl_post=usl_post_types.id                 where l.product='35832646'                 
 at /www/trade.su-2010/htdocs/bidding.pl line 160

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