when uploading more than a few thumbs it keeps failing for me, very annoying.

This code in the console:

/api/project/68dcfadd14e6c1e3b06ec90e/thumbs:1 Failed to load resource: the server responded with a status of 401 ()

B5iystel.js:28 FetchError: [POST] "/api/project/68dcfadd14e6c1e3b06ec90e/thumbs": 401

at async i (B5iystel.js:18:21553)

at async Se (B5iystel.js:28:6898)

at async Proxy.Q (B5iystel.js:28:41183)

at async Proxy.b (B5iystel.js:28:27543)

at async x (CvjqJufO.js:10:42700)

You might just need to upload them sequentially or manage to handle multiple streams