Error: (oursql.OperationalError) (2013, 'Lost connection to MySQL server during query', None) [SQL: 'SELECT moodle.mdl_sources.id AS moodle_mdl_sources_id, moodle.mdl_sources.name AS moodle_mdl_sources_name, moodle.mdl_sources.parent_id AS moodle_mdl_sources_parent_id, moodle.mdl_sources.`order` AS moodle_mdl_sources_order, moodle.mdl_sources.problem_id AS moodle_mdl_sources_problem_id, moodle.mdl_sources.verified AS moodle_mdl_sources_verified, moodle.mdl_sources.author AS moodle_mdl_sources_author, moodle.mdl_sources.time AS moodle_mdl_sources_time \nFROM moodle.mdl_sources \nWHERE moodle.mdl_sources.parent_id = ? AND moodle.mdl_sources.problem_id > ? ORDER BY moodle.mdl_sources.`order`, moodle.mdl_sources.name'] [parameters: (19787, 0)]