Corrupted File on upload

"@supabase/supabase-js": "^2.50.0",

------WebKitFormBoundaryq1P65x9Cx4VFT0SU
Content-Disposition: form-data; name="cacheControl"

3600
------WebKitFormBoundaryq1P65x9Cx4VFT0SU
Content-Disposition: form-data; name=""; filename="topsecret.txt"
Content-Type: application/octet-stream

const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
        const selectedFiles = event.target.files;
        if (selectedFiles && selectedFiles.length > 0) {
            const file = event.target.files?.[0]
            if(file != null){
                supabase.storage.from("bucket-name").upload(`users/abc/testUpload/${file?.name}`, file, {
                    upsert: true,
                    contentType: "text/plain"
                }).then(file => {
                    console.log(file.data)
                })
            }   
        }
    };