woodland mansion missing the room

i couldn't find the room : 1x1_as1
("X room") , 1x1_as2
("Spider room") , 1x1_as3
("Obsidian room") , 1x1_as4
("Birch pillar room") , 1x1_b5
("Allium room") , 1x2_s1
("Clean chest room") , 1x2_s2
("Fake end portal room") , 1x2_se1
("Roof-chests room") , 2x2_s1
("Lava room")