I'm trying to remove the mode. The issue I'm having that it is lagging the server more because of the following error's.

Server thread/ERROR02:23:47 Unknown structure start: buriedbarrels:stronghold_buried_barrel Unknown structure start: buriedbarrels:igloo_buried_barrel Unknown structure start: buriedbarrels:jungle_temple_buried_barrel Unknown structure start: buriedbarrels:common_hidden_buried_barrel Unknown structure start: buriedbarrels:village_buried_barrel Unknown structure start: buriedbarrels:pillager_outpost_buried_barrel Unknown structure start: buriedbarrels:woodland_mansion_buried_barrel Unknown structure start: buriedbarrels:end_city_buried_barrel Unknown structure start: buriedbarrels:abandoned_mineshaft_buried_barrel Unknown structure start: buriedbarrels:desert_pyramid_buried_barrel Server thread/WARN02:23:47 Found reference to unknown structure 'buriedbarrels:stronghold_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:igloo_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:jungle_temple_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:common_hidden_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:village_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:pillager_outpost_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:woodland_mansion_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:end_city_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:abandoned_mineshaft_buried_barrel' in chunk [-181, 116], discarding Found reference to unknown structure 'buriedbarrels:desert_pyramid_buried_barrel' in chunk [-181, 116], discarding

Is there a way to to delete these structure from the world? so that I can fully remove the mod?