An Error Was Encountered

Error Number: 1

Can't create/write to file '/tmp/#sql_c620c_1.MYD' (Errcode: 17)

SELECT * FROM iwm_banners as b, iwm_banner_position as bp WHERE b.posisiid=bp.posisiid AND bp.posname='header' AND (startdate + 25200)<='1529351431' AND (enddate + 25200)>='1529351431' AND bp.template='ColorMix' ORDER BY RAND() LIMIT 1