A problem with starting the server

So my I think theres something wrong with the modpack FTB beyond option because everytime I put it on and wait in the queue until it starts it stops. It says starting... and ingame it either says cannot connect to server or vanilla server/old version. And it just says starting for 5 minutes until it starts saying stopping... and i have retried multiple times.

1[14:04:09] [Server thread/INFO]: Starting minecraft server version 1.10.2
2[14:10:31] [Server thread/INFO]: Loading properties
3[14:10:31] [Server thread/INFO]: Default game type: SURVIVAL
4[14:10:31] [Server thread/INFO]: Generating keypair
5[14:10:31] [Server thread/INFO]: Starting Minecraft server on *:44489
6[14:10:31] [Server thread/INFO]: Using epoll channel type

thats all the log

I tried everything you said and still no.

please help ;w;

No i don't