pi@raspberrypi:~ $ sudo apt update
Get 1http://archive.raspberrypi.org/debian buster InRelease [32.6 kB]
Get:2 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 kB]
Get:4 http://archive.raspberrypi.org/debian buster/main armhf Packages [330 kB]
Hit:3 https://packagecloud.io/headmelted/codebuilds/debian stretch InRelease
Ign:5 https://packagecloud.io/rabbitmq/rabbitmq-server/raspbian buster InRelease
Get:6 http://raspbian.raspberrypi.org/raspbian buster/main armhf Packages [13.0 MB]
Err:7 https://packagecloud.io/rabbitmq/rabbitmq-server/raspbian buster Release > 404 Not Found [IP: 220.127.116.11 443] Reading package lists... Done
E: The repository 'https://packagecloud.io/rabbitmq/rabbitmq-server/raspbian buster 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 was trying to update packages and found that there is an error caused by the Rabbit MQ which I installed earlier.
I still remember that I was following some instruction to modify sources.list or sources.list.d or maybe other file to add RabbitMQ's url, but I forget where it is.
I opened the /etc/aptsources.list and there isn't the rabbitmq url.
How can I find where and what file is the string 'https://packagecloud.io/rabbitmq/rabbitmq-server/raspbian buster Release' located?