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( 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.