Não consigo seguir as etapas de instalação do ambiente para o ubuntu. Tentei instalar cada item descrito na parte de preparação do ambiente separadamente e ao rodar os comandos
sudo apt-get install default-mysql-server
e sudo apt-get install phpmyadmin
recebo erros de 404 not found.
sudo apt-get install default-mysql-server
Err:1 http://security.ubuntu.com/ubuntu bionic-updates/main amd64 mysql-client-core-5.7 amd64 5.7.29-0ubuntu0.18.04.1
404 Not Found [IP: 2801:82:80ff:8000::5 80]
Err:2 http://security.ubuntu.com/ubuntu bionic-updates/main amd64 mysql-client-5.7 amd64 5.7.29-0ubuntu0.18.04.1
404 Not Found [IP: 2801:82:80ff:8000::5 80]
Err:3 http://security.ubuntu.com/ubuntu bionic-updates/main amd64 mysql-server-core-5.7 amd64 5.7.29-0ubuntu0.18.04.1
404 Not Found [IP: 2801:82:80ff:8000::5 80]
Err:4 http://security.ubuntu.com/ubuntu bionic-updates/main amd64 mysql-server-5.7 amd64 5.7.29-0ubuntu0.18.04.1
404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-client-core-5.7_5.7.29-0ubuntu0.18.04.1_amd64.deb 404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-client-5.7_5.7.29-0ubuntu0.18.04.1_amd64.deb 404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-server-core-5.7_5.7.29-0ubuntu0.18.04.1_amd64.deb 404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-server-5.7_5.7.29-0ubuntu0.18.04.1_amd64.deb 404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
sudo apt-get install phpmyadmin
Err:1 http://security.ubuntu.com/ubuntu bionic-updates/main amd64 mysql-client-core-5.7 amd64 5.7.29-0ubuntu0.18.04.1
404 Not Found [IP: 2801:82:80ff:8000::5 80]
Err:2 http://security.ubuntu.com/ubuntu bionic-updates/main amd64 mysql-client-5.7 amd64 5.7.29-0ubuntu0.18.04.1
404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-client-core-5.7_5.7.29-0ubuntu0.18.04.1_amd64.deb 404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-client-5.7_5.7.29-0ubuntu0.18.04.1_amd64.deb 404 Not Found [IP: 2801:82:80ff:8000::5 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?