Server crashes when setting up

having an absolute nightmare trying to get spongeforge to work on a new server i am trying to create. i am using a hosting website called apex hosting. i try to use an ftp client to transfer the spongeforge.jar folder into the mods folder of the server but everytime i attempt this it crashes my server. i didnt know if forge was already on the server so i tried adding that too through the ftp but the same thing happens. the server crashes until i delete those files and sometimes i have to completely reset the server. please help if you can.

Whats the crash log?

this is a large part of the console log.
it just seems to be really heavily conflicting

most of it is just repeating from what i could gather