[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
DELETE FROM b_composite_page WHERE ID IN (786060,701409,916949,878898,788484,817302,577600,916950,916951,916952,916953,916954,916955,916956,916957,916958,916959,916960,916961,916962,916963,916964,916965,916966,916967,916968,916969,916970,916971,916972,916973,916974,916975,916976,916977,916978,916979,916980,916981,916982,916983,916984,916985,916986,916987,916988,916989,916990,916991,916992,916993,916994,916995,916996,916997,916998,916999,917000,917001,917002,917003,917004,917005,917006,917007,917008,917009,917010,917011,917012,917013,917014,917015,917016,917017,917018,917019,917020,917021,917022,917023,917024,917025,917026,917027,917028,581025,917029,917030,917031,917032,917033,917034,917035,917036,917037,917038,917039,917040,917041)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:379
#2: Bitrix\Main\DB\Connection->queryExecute
	/home/bitrix/www/bitrix/modules/main/lib/composite/internals/model/page.php:186
#3: Bitrix\Main\Composite\Internals\Model\PageTable::deleteBatch
	/home/bitrix/www/bitrix/modules/main/lib/composite/engine.php:831
#4: Bitrix\Main\Composite\Engine::ensureFileQuota
	/home/bitrix/www/bitrix/modules/main/lib/composite/engine.php:485
#5: Bitrix\Main\Composite\Engine::processPageContent
	/home/bitrix/www/bitrix/modules/main/lib/composite/engine.php:422
#6: Bitrix\Main\Composite\Engine::endBuffering
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:3196
#7: CAllMain->EndBufferContent
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:3140
#8: CAllMain->EndBufferContentMan
	/home/bitrix/www/bitrix/modules/main/include/epilog_after.php:36
#9: require(string)
	/home/bitrix/www/bitrix/modules/main/include/epilog.php:3
#10: require_once(string)
	/home/bitrix/www/bitrix/footer.php:4
#11: require(string)
	/home/bitrix/www/index.php:6