Modpack: All in One [Modded OneBlock] 1.16.5
Running: productivebees-1.16.5-0.6.9.23.jar

In our server we noticed an issue in the console that was spamming "[Server thread/WARN] [minecraft/EntityType]: Skipping Entity with id" pictured here : https://gyazo.com/57a76401cd2f23ca92fe0edfa74dec3c
After alot of trying to diagnose the problem I found a Productive Bees hive with a bee that was invisible but there as pictured here : https://gyazo.com/a67b692056aa4bdd3b3a22d99ea290d7
After picking up any hives in the area that contained a "Ghost Bee" the console spam stopped. My guess is that the bee is a duplicated UUID causing the entity to not render , but I'm no pro.

Hope this info helps solve any one elses issue with the same console spam.

Okay so I am not alone. Any ideas how to fix that? Using Valhelsia 3

Edit: Yeah only way to pick up a Hive with an inv bee.

the fix is to find the hive that makes noise, break it and reset it in a crafting grid, but I still don't know why it happens.

have you guys had server crashes or restarts where it was rolled back a few minutes?

No nothing, the console just gets flooded the whole time.

start chopping hives (they retain the bees inside), when the output stops you've found the right one

Yeah but still have to wait for them to get out and other players do not see the console.

you can hit the hive with a stick to force them out

Can you send me a list of mods you're having?

Sure thing heres the list for the All In One [Modded OneBlock] Pack.
modlist.txt

did you add optifine or make any other changes to the pack?

Sorry for the late response , no we havent. the pack is as default on the server.

same thing happening on my server