[MC-94468] Attribute Modifiers Not Showing Up

I made a few custom items with Attribute Modifiers, but it appears they do not show up.

Command:

/give @p minecraft:elytra 1 0 {AttributeModifiers:[{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.2,Operation:0,UUIDLeast:0,UUIDMost:0,Slot:"torso"},{AttributeName:"generic.armor",Name:"generic.armor",Amount:10,Operation:0,UUIDLeast:0,UUIDMost:0,Slot:"torso"},{AttributeName:"generic.attackSpeed",Name:"generic.attackSpeed",Amount:0.6,Operation:0,UUIDLeast:0,UUIDMost:0,Slot:"torso"}],display:{Name:"Flight Wings",Lore:[When Equipped, You Can Fly Infinitely!]},ench:[{id:0,lvl:5},{id:4,lvl:3},{id:7,lvl:3},{id:34,lvl:10}]}