Uploaded images get octet-stream mime type

// Upload banner to Supabase
const { data, error } = await supabase.storage
    .from("images")
    .upload(
        `profiles/UUID/${banner.name}`,
        banner,
        {
            upsert: true,
            // contentType: `image/${extension}`,
        },
    );
if (error) {
    console.log(error);
} else {
    console.log(data);
}