I can't upload a 432.4MB world onto my server?

[xXNyanXx]

I tried going into the dashboard up-loader and it goes 100%, then does nothing. I restarted and still nothing. I also went to file.io but it says that the upload failed. I tried it 4 times. I have looked at other posts and I see some people having the same problem but I haven't found an understandable answer. Please help if you can. Thanks!

[KJPAKA]

Make sure its a zip file. Also, note if it is the file is most likely to large.

[xXNyanXx]

Thank you, I think the file had an internal issue though so I downloaded a different things and it worked fine. Thank you for the help.