Ah, you're using `file[]` as the form field? I thought I saw something to that effect in the nostr.build source, but afaict that's off spec? nostr-tools uses `file` and that was my reading of the spec as well.
Discussion
Maybe nostr:nprofile1qythwumn8ghj7un9d3shjtnwdaehgu3wvfskuep0qyfhwumn8ghj7ur4wfcxcetsv9njuetn9uq35amnwvaz7tmwdaehgu3ww35x2umpd4jkxct59e5k7tcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhszythwden5te0dehhxarj9emkjmn99uq3xamnwvaz7tm0venxx6rpd9hzuur4vghszrnhwden5te0dehhxtnvdakz7qg6waehxw309aex2mrp0yhxummnw3exx6r9vd4jumt99uq3zamnwvaz7te3xsczue3h0ghxjme0qqsgnc2tuj0dqpea4qak0qnee55m5kkcdncqpd4r6xjv8hz25n7aqtqfct0ud knows more, I didn't actually build this feature
The spec defines one file per upload, you must upload one file at a time and wait for a response for each file. I remember this was something that was discussed during the creation of NIP96.
https://github.com/nbd-wtf/nostr-tools/pull/413 someone identified the fix 2 weeks ago and I spent quite a few hours to come to the same conclusion lol AGH
It's happened to me tons of times 🫂🤣