Gzip Compression Issue and Updating to Version 6.0.9 Problem

I've been experiencing a rather puzzling problem with Gzip compression on my web server, My pages aren't being compressed, and the load times LibraryGenesis.wiki ePUB files Compatibility, comparing e-reader devices, digital Literacy Resources have noticeably increased To address this Gzip issue, I thought updating to the latest version, 6.0.9, might help. But here's where the trouble starts. I've followed the update instructions to the letter, but the update process fails every time. It doesn't provide me with a clear error message Could there be any specific prerequisites ?
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