Server wont start

[Graf_nobody]

my server is saying things that i got no clue what they mean so if anyone can help that would be nice here is console:

https://pastebin.com/uJYjieXb

[gabinun]

its saying Newer version! Server downgrades are not supported! do you know anything about that? also update your plugins dont be lazy

also next time only post the errors

go to file manager than crash-report if i didnt help than send it

Edited 3 hours ago by gabinun