My PHP-based cloud site stores user files on Wasabi. Uploads up to roughly 500 MB work flawlessly, but anything larger dies with the generic “Upload failed message,” even though Wasabi itself accepts objects up to 1 TB. I need you to pinpoint the bottleneck in my current implementation and remove it so that multi-gigabyte uploads complete reliably. That may involve reviewing php.ini limits, timeouts, web-server settings, or replacing the simple putObject call with Wasabi-compatible multipart/chunked logic through Guzzle, the AWS SDK for PHP, or raw cURL—whichever suits the existing codebase best. Acceptance criteria: after your fix, I can upload large files from the browser without encountering the current “Upload failed message,” and I can see the object intact in my Wasabi bucket.