我尝试在 Ubuntu 21 上安装 CouchDB，但没有成功，但现在我在 apt-get 更新时收到此错误，这似乎阻止我在系统上安装任何其他东西。
d@mypc:~$ sudo apt-get update
Hit:1 http://ppa.launchpad.net/cappelikan/ppa/ubuntu focal InRelease
Ign:2 https://apache.jfrog.io/artifactory/couchdb-deb hirsute InRelease
Hit:3 https://download.sublimetext.com apt/stable/ InRelease
Err:4 https://apache.jfrog.io/artifactory/couchdb-deb hirsute Release
404 Not Found [IP: 35.160.64.110 443]
Reading package lists... Done
E: The repository 'https://apache.jfrog.io/artifactory/couchdb-deb 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.
奇怪的是 /etc/apt/sources.list 是空的，因为我已经删除了我之前尝试添加的 couchdb 源。
我的系统在哪里引用“https://apache.jfrog.io/artifactory/couchdb-deb”以及如何删除它？