=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Fetching jupyter_server-2.21.0.tar.gz
=> Total size: 760357 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file jupyter_server-2.21.0.tar.gz
=> Checksum BLAKE2s OK for jupyter_server-2.21.0.tar.gz
=> Checksum SHA512 OK for jupyter_server-2.21.0.tar.gz
=> Checksum BLAKE2s OK for jupyter_server-2.21.0.tar.gz
=> Checksum SHA512 OK for jupyter_server-2.21.0.tar.gz