Server hang up

https://preview.redd.it/erm2dyl7sczg1.png?width=812&format=png&auto=webp&s=0ac00e7fe0f326a4ad19b71b9b4835690e390af6

https://preview.redd.it/ag39jwsbsczg1.png?width=1920&format=png&auto=webp&s=90efedc7d0a322f824dcd2eda1ec2b78305d360b

https://preview.redd.it/1p3qvj0dsczg1.png?width=1920&format=png&auto=webp&s=bf1edad6c676e2c622787ad12f48228c48a5d859

Hello, I recently made a modpack with a friend to play, but I've been having this problem when running the server: It works fine for a few minutes, but eventually, the server times out. Judging by the console, it may have to do with the Spirit Mod. Any clue?