My YunoHost server
Hardware: VPS bought online
YunoHost version: 4.1.8 (stable).
I have access to my server : Through SSH | through the webadmin | direct access via keyboard / screen | …
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no
Description of my issue
When I am checking for updates I get again this sort of error:
Unable to update the cache of APT (Debian's package manager). Here is a dump of the sources.list lines, which might help identify problematic lines:
sources.list:deb http://asi-fs-n.contabo.net/debian buster main non-free contrib
sources.list:deb-src http://asi-fs-n.contabo.net/debian buster main non-free contrib
sources.list:deb http://security.debian.org/debian-security buster/updates main contrib non-free
sources.list:deb-src http://security.debian.org/debian-security buster/updates main contrib non-free
sources.list:deb http://asi-fs-n.contabo.net/debian buster-updates main contrib non-free
sources.list:deb-src http://asi-fs-n.contabo.net/debian buster-updates main contrib non-free
sources.list.d/mobilizon.list:deb http://packages.erlang-solutions.com/debian buster contrib
sources.list.d/crystal.list:deb https://dl.bintray.com/crystal/deb all stable
sources.list.d/yunohost.list:deb https://forge.yunohost.org/debian/ buster stable
sources.list.d/onlyoffice.list:deb http://download.onlyoffice.com/repo/debian squeeze main
sources.list.d/webmin.list:deb http://download.webmin.com/download/repository sarge contrib
E: The repository 'https://dl.bintray.com/crystal/deb all InRelease' is no longer signed.
E: Failed to fetch https://dl.bintray.com/crystal/deb/dists/all/InRelease 403 Forbidden [IP: 18.158.131.58 443]
Fetching available upgrades for system packages...
Is it ok to remove https://dl.bintray.com/crystal/deb repository?