Phantoms Don't Spawn Even Though doInsomnia is set to true

What biome are you in? Is "doMobSpawning" enabled? What difficulty are you playing on?

Mountains, doMobSpawning is enabled, on hard difficulty

Do you have any datapacks that may modify the phantom spawning?

It is a completely vanilla survival map without any datapacks or any kind of modification. Basically I generated it as I do it all the time, and never touched the map files itself.

I can attach the world if it helps

Please do so, if it is too large to upload it directly, please use a third party hosting website.

Here you go: https://mega.nz/file/j9gSjIJC#GecKuakibBLROicIJoEhFsUg3JjlKGdrl73WqNu3LzU

My base's coordinates are: 3842 / 75 / -222

The download is no longer available.

I managed to have phantoms spawn, but I think pahntom spawning can be affected by going through the nether and then back to the overworld, since I play it with my frined who regulalry goes to the nether, and while he is there I could sleep in the overworld. Then none of us slept and wen to the nether either for 4 days, and they spawned.

Please provide a screenshot of your game while you are in the world with the F3 debug screen enabled.