Your log is filled with over 20 out of memory errors:
if it used to work but now doesn't i suspect its a mod not releasing memory its using. Try removing mods you've added recently and see if it helps.
Alright, so I noticed something red in my server after I boot it up, I needed to change the config file for it to remove something. I've also removed a defective mod that seemed to be interfering with some other mod which I preferred using. Thanks for the help.