Pixelmon server using spongeforge can't start

I am using Spongeforge to use plugins on my Pixelmon server, but everytime I try to start the server it shuts down and i get this error: ‘30.08 15:28:10 [Server] Server thread/ERROR [Sponge]: Failed loading Sponge data for World [DIM-1]}. This is a critical problem and should be reported to Sponge ASAP.’ I do not know how to fix this so I hope someone else does. I am using Spongeforge version 4.2.0 and pixelmon version 1.8.9. fml-server-latest.log: http://pastebin.com/ubC19yNf

Can you please post the versions of Sponge and Pixelmon you’re using (as well as the full fml-server-latest.log).

Do i have to copy-paste the fml-server-latest-log or upload it, because i get an error when i try to upload it?

You can upload it to pastebin

edited the post

It looks like the level_sponge.dat is corrupt for both DIM-1 and DIM1
Delete the file and let it regenerate (or copy from a backup if you have one).