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Hi everyone,
I would like to ask for advice. When I upload the world, loading is very slow and I always get an error 198. I don't know what to do with it, 
and when I turn on that singleplayer world, it loads it normally. 2 times it happened to me that the world was loading but when I came to the server I knew it wasn't the world and I don't know why it happened and what
Help me please
I have the same problem,
Somebody asked me theses questions:
Which browser do you use?
Did you already try to unpack and rezip the world and upload it then?
How long does it take from upload begin until you receive the error message?
Does the progress bar increase?
Maybe we can try to find a solution together 
I have the same error 198...
Where is the world from?
friends I opened new server and problem solved
