Cannot install Server in Ubuntu

NO_PUBKEY 60EE7A4D9B483075

Problem here is a snipet:
404 Not Found [IP: 2620:2d:4000:1::81 443]

The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 60EE7A4D9B483075
Reading package lists… Done
E: The repository ‘Index of /uroni/urbackup/ubuntu noble Release’ does not have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: /repositories/home:/uroni/xUbuntu_24.04 - openSUSE Download InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 60EE7A4D9B483075

N: See apt-secure(8) manpage for repository creation and user configuration details.
carlos@carlos-frankenstein:~$ sudo apt update
Warning: The unit file, source configuration file or drop-ins of apt-news.service changed on disk. Run ‘systemctl daemon-reload’ to reload units.
Warning: The unit file, source configuration file or drop-ins of esm-cache.service changed on disk. Run ‘systemctl daemon-reload’ to reload units.

I used wget to get the file urbackup-server_2.5.33_amd64.deb but now get the following error:

The following packages have unmet dependencies:
urbackup-server : Depends: libcurl3-nss (>= 7.23.1) but it is not installable
E: Unable to correct problems, you have held broken packages.