Main brush error on the Dreame X40 Ultra

Dreame X40 Ultra Filter Dreame X40 Ultra Left side brush Dreame X40 Ultra Right side brush Dreame X40 Ultra Main brush roller Dreame X40 Ultra Brush guard Dreame X40 Ultra Side brush set Dreame X40 Ultra Cable organizer Dreame X40 Ultra Cleaning tool Dreame X40 Ultra Charging cable Dreame X40 Ultra Remote control Dreame X40 Ultra Floor cleaning solution Dreame X40 Ultra Mop pad Dreame X40 Ultra Mop pad (4-pack) Dreame X40 Ultra Water tank filter Dreame X40 Ultra Battery Dreame X40 Ultra Dust bag Dreame X40 Ultra Dock filter Dreame X40 Ultra HEPA filter Dreame X40 Ultra Dock base pad Dreame X40 Ultra Drive wheels Dreame L10s Ultra Filter Dreame L10s Ultra Left side brush Dreame L10s Ultra Right side brush Dreame L10s Ultra Main brush roller Dreame L10s Ultra Side brush set Dreame L10s Ultra Mop pad Dreame L10s Ultra Mop pad (4-pack) Dreame L10s Ultra Battery Dreame L10s Pro Ultra Filter Dreame L10s Pro Ultra Left side brush Dreame L10s Pro Ultra Right side brush Dreame L10s Pro Ultra Main brush roller Dreame L10s Pro Ultra Side brush set Dreame L10s Pro Ultra Mop pad Dreame L10s Pro Ultra Mop pad (4-pack) Dreame L10s Pro Ultra Battery Dreame L20 Ultra Filter Dreame L20 Ultra Left side brush Dreame L20 Ultra Right side brush Dreame L20 Ultra Main brush roller Dreame L20 Ultra Side brush set Dreame L20 Ultra Mop pad Dreame L20 Ultra Mop pad (4-pack) Dreame L20 Ultra Battery Dreame L30 Ultra Filter Dreame L30 Ultra Left side brush Dreame L30 Ultra Right side brush Dreame L30 Ultra Main brush roller Dreame L30 Ultra Side brush set Dreame L30 Ultra Mop pad Dreame L30 Ultra Mop pad (4-pack) Dreame L30 Ultra Battery Dreame L40 Ultra Filter Dreame L40 Ultra Left side brush Dreame L40 Ultra Right side brush Dreame L40 Ultra Main brush roller Dreame L40 Ultra Side brush set Dreame L40 Ultra Mop pad Dreame L40 Ultra Mop pad (4-pack) Dreame L40 Ultra Battery Dreame L50 Filter Dreame L50 Left side brush Dreame L50 Right side brush Dreame L50 Main brush roller Dreame L50 Side brush set Dreame L50 Mop pad Dreame L50 Mop pad (4-pack) Dreame L50 Battery Dreame L60 Filter Dreame L60 Left side brush Dreame L60 Right side brush Dreame L60 Main brush roller Dreame L60 Side brush set Dreame L60 Mop pad Dreame L60 Mop pad (4-pack) Dreame L60 Battery Dreame X10 Filter Dreame X10 Left side brush Dreame X10 Right side brush Dreame X10 Main brush roller Dreame X10 Side brush set Dreame X10 Mop pad Dreame X10 Mop pad (4-pack) Dreame X10 Battery Dreame X20 Filter Dreame X20 Left side brush Dreame X20 Right side brush Dreame X20 Main brush roller Dreame X20 Side brush set Dreame X20 Mop pad Dreame X20 Mop pad (4-pack) Dreame X20 Battery Dreame X20 Ultra Filter Dreame X20 Ultra Left side brush Dreame X20 Ultra Right side brush Dreame X20 Ultra Main brush roller Dreame X20 Ultra Side brush set Dreame X20 Ultra Mop pad Dreame X20 Ultra Mop pad (4-pack) Dreame X20 Ultra Battery Dreame X30 Filter Dreame X30 Left side brush Dreame X30 Right side brush Dreame X30 Main brush roller Dreame X30 Side brush set Dreame X30 Mop pad Dreame X30 Mop pad (4-pack) Dreame X30 Battery Dreame X30 Ultra Filter Dreame X30 Ultra Left side brush Dreame X30 Ultra Right side brush Dreame X30 Ultra Main brush roller Dreame X30 Ultra Side brush set Dreame X30 Ultra Mop pad Dreame X30 Ultra Mop pad (4-pack) Dreame X30 Ultra Battery Dreame X40 Filter Dreame X40 Left side brush Dreame X40 Right side brush Dreame X40 Main brush roller Dreame X40 Side brush set Dreame X40 Mop pad Dreame X40 Mop pad (4-pack) Dreame X40 Battery Dreame X50 Filter Dreame X50 Left side brush Dreame X50 Right side brush Dreame X50 Main brush roller Dreame X50 Side brush set Dreame X50 Mop pad Dreame X50 Mop pad (4-pack) Dreame X50 Battery