my armorstand isnt getting summoned

here's the command: execute as @a[tag=stone] at @s unless entity @e[type=minecraft:armor_stand,tag=Aplayer,distance=..2] run summon minecraft:armor_stand ~ ~ ~ {Marker:true,NoGravity:true,Small:true,Tags:["Aplayer"],equipment:{head:{id:"minecraft:stone",count:1}},attributes::[{id:"minecraft:scale",base:3}],active_effects:[{id:"minecraft:invisibility",amplifier:255,duration:-1,show_particles:0b}]}