server timed out, no idea why

me and my friend have been trying to join our server for the past ten-ish minutes. previously, we could play normally but now everytime we join it either times us out before we can actually get into the server, or after a few seconds in the server disconnects us and times us out anyway. we dk what the reason may be, ive looked at other threads and tried their solutions but it doesn't seem to help. i dont think its an internet problem. there are some weird things in the log that are errors, but i don't really understand them. https://mclo.gs/vaMY2iU

no, i didn't spawn many entities. the randomtickspeed is 999999999, is that the problem? i'm changing it to something lower. i thought it'd be fine since we didn't experience anything when we first changed it to that