Cannot upload file >20mb (?)

Hi there.

My hosting provider can’t seem to figure out why I cannot upload file(s) greater than 20mb.
When I tried to upload 50mb/100mb test file, there’s a strange white line that popped on top of the page. ( when the upload failed )

This is what the tech support representative wrote:


You can provide them with the error message you’re receiving while trying to upload the file.

Also, make sure to mention that the web-server used in our server is Litespeed. Once they reply to your ticket, please forward it to us, so that I can take a look at it and respond accordingly.

Maximum upload size is set to 1gb in admin panel.

Here’s the error log: