My server crashes

This morning, I wanted to activate a server I had with some friends, but later, the console got stuck at "Preparing start region for dimension minecraft:overworld" and it's been like that for like 6 hours. Sometimes it stays at "0%", or it just doesn't load. After any of that happens, in about 20 minutes, it shows an error saying that the server crashed. I tried everything i could: reinstalled the world (we had a copy of it), the mods, and everything, but it stays the same. Sometimes, in the console, it shows various red texts, but i don't know what they mean. I would really appreciate if I could find a reason why this happened, knowing it's the first time I had this experience with the aternos servers. Thank you.

Log for "Preparing start region for dimension minecraft:overworld" problem here
Log for "It stays at 0%" problem here

"Red text" problem in the image below

"Crashes" problem in the image below

board.aternos.org/wcf/attachment/4832/

Quote from Powerful845tiger

The image is not to clear but I can see the server is running out of memory

Is there a way I can fix that?

Quote from Powerful845tiger

Try installing ferritecore mod

It's still the same, there are more red lines on the console

the log is here

Quote from Powerful845tiger

Can you share a screenshot of the mods you use and have you tried regenerating the world(Before regenerating the world don't forget to keep a backup of your server)

Those are the mods we have in our server, Mr Crayfish's furtinite mod and Chisel & Bits.

Also, if by regenerating you mean starting a new world, i've tried, and it works fine. The problem is only the world in our server.