Unfortunately the switch to INDI nightly fails on my system.
"sudo apt-add-repository ppa:mutlaqja/indinightly" gives


.
.
Err:10 ppa.launchpad.net/mutlaqja/ppa/ubuntu hirsute Release 404 Not Found [IP: 91.189.95.83 80]
Hit:9 minio.k-space.ee/armbian/apt bionic InRelease Reading package lists... Done
E: The repository ' ppa.launchpad.net/mutlaqja/ppa/ubuntu hirsute 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.

I never changed to INDI nightly builds before and don't know, what i'm doing wrong.

Regards
Stefan

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