error fatpanel

Architecture x86_64.
Greetings user!

Now I will install the best control panel for you!



Start pre-installation checks


OS:

Ubuntu 18.04.5 LTS



Checking init daemon.

Package 'systemd-sysv' is installed.
Package 'fastpanel2' not installed.
Package 'nginx' not installed.
Package 'apache2' not installed.
Package 'mysql-server' not installed.
Package 'mariadb-server' not installed.
Package 'percona-server-server' not installed.
Package 'percona-server-server-5.6' not installed.
Package 'percona-server-server-5.7' not installed.
The package 'gnupg' is installed
Installing FASTPANEL package.


Configuring FASTPANEL repository.

Adding repository key from http://repo.fastpanel.direct/.
Warning: apt-key output should not be parsed (stdout is not a terminal)
OK
Adding repository file /etc/apt/sources.list.d/fastpanel2.list
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?