Error while processing the request: (MySQL server has gone away)
SELECT
					`institutions`.`id`,
					`institutions`.`type`,
					`institutions`.`name`,
					`institutions`.`photo`,
					`institutions`.`photos`,
					`cities`.`city_name_ru` AS `city_name`,
					(6371 * acos( cos( radians(39.766946) ) * cos( radians( X(`institutions`.`coordinates`) ) )
					* cos( radians( Y(`institutions`.`coordinates`) ) - radians(117.061319)) + sin(radians(39.766946))
					* sin( radians( X(`institutions`.`coordinates`) )))) AS `distance`
				FROM `institutions`
				LEFT JOIN `cities` ON `cities`.`city_id` = `institutions`.`city`
				WHERE (`type`='kindergarten' || `type`='school') AND `id`!='5248418' AND
					MBRContains(
						LineString(
							Point(
								39.766946 + 1 / ( 111.1 / COS(RADIANS(117.061319))),
								117.061319 + 1 / 111.1
							),
							Point(
								39.766946 - 1 / ( 111.1 / COS(RADIANS(117.061319))),
								117.061319 - 1 / 111.1
							)
						),
						`institutions`.`coordinates`
					)
				HAVING `distance` <= 1
				ORDER BY distance