mobs are not spawning when using the block restriction / modifier

[ { "mob": "minecraft:zombie", "persecond": 0.5, "attempts": 60, "amount": { "minimum": 1, "maximum": 1 }, "conditions": { "dimension": "minecraft:the_end", "norestrictions":true } } ]

`[
{
"onjoin":true,
"mob": "minecraft:zombie",
"block":"minecraft:end_stone",
"maxcount": {
"amount": 40,
"perplayer": true
},
"biome": "minecraft:end_midlands",
"result": "allow"
},
{
"mob": "minecraft:zombie",
"result": "deny"
}

]`

this is what I used

1.16.5
5.1.8

Fixed