1030 - Got error 28 from storage engine

SELECT t_persos.*, CONCAT(t_persos.persos_prenom, ' ', t_persos.persos_nom, if(t_persos.persos_surnom<>'', CONCAT(' (', t_persos.persos_surnom, ')'), '') ) AS persos_libelle, (select events_date from t_events LEFT JOIN l_persos_events ON (t_events.events_id = l_persos_events.events_id AND t_events.events_types_events_id = '1' ) where l_persos_events.persos_id = t_persos.persos_id) AS dateN, (select events_date from t_events LEFT JOIN l_persos_events ON (t_events.events_id = l_persos_events.events_id AND t_events.events_types_events_id = '2') where l_persos_events.persos_id = t_persos.persos_id) AS dateM FROM t_persos JOIN l_persos_familles ON t_persos.persos_id = l_persos_familles.persos_id WHERE l_persos_familles.familles_id = '13' AND ((select events_date from t_events LEFT JOIN l_persos_events ON (t_events.events_id = l_persos_events.events_id AND t_events.events_types_events_id = '1' ) where l_persos_events.persos_id = t_persos.persos_id) is not null OR (select events_date from t_events LEFT JOIN l_persos_events ON (t_events.events_id = l_persos_events.events_id AND t_events.events_types_events_id = '2') where l_persos_events.persos_id = t_persos.persos_id) is not null) AND l_persos_familles.familles_fondateur = '1' ORDER BY (select events_date from t_events LEFT JOIN l_persos_events ON (t_events.events_id = l_persos_events.events_id AND t_events.events_types_events_id = '1' ) where l_persos_events.persos_id = t_persos.persos_id) LIMIT 1

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