Debian Bookworm & ppa:sebastian-stenzel/cryptomator

Hello,

I am trying to install .deb package, (or a non AppImage package) on Debian Bookworm; and I am not able to to install CryptoMator.

sudo add-apt-repository ppa:sebastian-stenzel/cryptomator
sudo apt update

The process ends up with:

E: The repository 'https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm 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.

To overcome this, I added [trusted=yes] to the source:

sudo nano /etc/apt/sources.list.d/sebastian-stenzel-ubuntu-cryptomator-bookworm.list

Thus:

deb https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu/ bookworm main
# deb-src https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu/ bookworm main

becomes this:

deb [trusted=yes] https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu/ bookworm main
# deb-src https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu/ bookworm main

However, running the update once again, I do get this:

Ign:14 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 DEP-11 Metadata                                                                                                                            
Ign:15 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 48x48 Icons                                                                                                                               
Ign:16 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 64x64 Icons                                                                                                                               
Ign:18 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 128x128 Icons                                                                                                                             
Ign:10 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all Packages                                                                                                                                     
Ign:11 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 Packages                                                                                                                                   
Ign:12 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all DEP-11 Metadata
Ign:14 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 DEP-11 Metadata
Ign:15 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 48x48 Icons
Ign:16 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 64x64 Icons
Ign:18 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 128x128 Icons
Ign:10 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all Packages
Ign:11 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 Packages
Ign:12 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all DEP-11 Metadata
Ign:14 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 DEP-11 Metadata
Ign:15 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 48x48 Icons
Ign:16 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 64x64 Icons
Ign:18 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 128x128 Icons
Ign:10 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all Packages
Ign:11 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 Packages
Ign:12 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all DEP-11 Metadata
Ign:14 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 DEP-11 Metadata
Ign:15 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 48x48 Icons
Ign:16 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 64x64 Icons
Ign:18 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 128x128 Icons
Ign:10 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all Packages
Ign:11 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 Packages
Ign:12 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all DEP-11 Metadata
Ign:14 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 DEP-11 Metadata
Ign:15 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 48x48 Icons
Ign:16 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 64x64 Icons
Ign:18 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 128x128 Icons
Ign:10 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all Packages
Err:11 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 Packages
  404  Not Found [IP: 185.125.190.52 443]
Ign:12 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main all DEP-11 Metadata
Ign:14 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main amd64 DEP-11 Metadata
Ign:15 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 48x48 Icons
Ign:16 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 64x64 Icons
Ign:18 https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu bookworm/main DEP-11 128x128 Icons
Fetched 18.4 kB in 36s (508 B/s)                             
Reading package lists... Done
E: Failed to fetch https://ppa.launchpadcontent.net/sebastian-stenzel/cryptomator/ubuntu/dists/bookworm/main/binary-amd64/Packages  404  Not Found [IP: 185.125.190.52 443]
E: Some index files failed to download. They have been ignored, or old ones used instead.

Of course, same lines appear when I do try to install Cryptomator:

sudo apt update && apt install cryptomator

Is there a Debian Bookworm package? Or there is not? What am I missing here?

Thanx