I'm trying to upload my MCPE world to my server. I've made it into a .zip file. The problem is I always get that error 198. It takes about 5 minutes until I get the message. My world is 18mb. How do I fix this problem? I'm new to this and I don't know what to do. :((( 
I tried uploading it bare file on my laptop. It works, when its done uploading and when I start the server it crashes and it says:
| 2020-03-20 [22:56:13] [Server thread/ERROR]:Could not load world "world": Specified LevelDB world format version (8) is not supported | |
| 2020-03-20 [22:56:13] [Server thread/EMERGENCY]: No default world has been loaded |