3.0.1 Upgrade Not Working

Trying to upgrade from 3.0.0 to 3.0.1
Linux Xubuntu 18.0.4

base@base-MS-7920:~$ sudo apt upgrade darktable
Reading package lists… Done
Building dependency tree
Reading state information… Done
Calculating upgrade… Done
The following package was automatically installed and is no longer required:
libfwup1
Use ‘sudo apt autoremove’ to remove it.
The following NEW packages will be installed:
fonts-roboto fonts-roboto-hinted fwupd-signed libjs-prototype libjs-scriptaculous libxmlb1
The following packages will be upgraded:
darktable fwupd fwupdate fwupdate-signed google-chrome-stable linux-firmware python-sip
7 upgraded, 6 newly installed, 0 to remove and 0 not upgraded.
Need to get 4,011 kB/148 MB of archives.
After this operation, 16.0 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Err:1 http://download.opensuse.org/repositories/graphics:/darktable/xUbuntu_18.04 darktable 3.0.0-1.1
404 Not Found [IP: 195.135.221.134 80]
E: Failed to fetch http://download.opensuse.org/repositories/graphics:/darktable/xUbuntu_18.04/./amd64/darktable_3.0.0-1.1_amd64.deb 404 Not Found [IP: 195.135.221.134 80]
E: Unable to fetch some archives, try running apt-get update or apt-get --fix-missing.

you are trying to fetch the 3.0.0 file not the 3.0.1 file.

you might have to reimport the key file as described here:

https://software.opensuse.org/download.html?project=graphics:darktable&package=darktable

That worked, thank you. I knew it was probably a problem with the key but could not find out how to resolve the issue.