Cannot install lsphp74-imagick: unmet dependencies

I have an Ubuntu 20.04 LTS instance running on Amazon Lightsail and I have trouble installing lsphp74-imagick.

$ sudo apt install lsphp74-imagick

Response:

The following packages have unmet dependencies:
lsphp74-imagick : 
Depends: libmagickcore-6.q16-3 (>= 8:6.9.6.8) but it is not installable               
Depends: libmagickwand-6.q16-3 (>= 8:6.9.6.8) but it is not installable
Recommends: ttf-dejavu-core but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

For libmagickcore I get the following:

$ sudo apt install libmagickcore-6.q16-3
..
E: Package 'libmagickcore-6.q16-3' has no installation candidate

Not sure where to go from here. Did anyone run into this?

Any help is appreciated.

The Original Issue sounded like an Repository issue. And it was so.

To fix that:

Install automatically the Repository

wget -O - http://rpms.litespeedtech.com/debian/enable_lst_debian_repo.sh | bash

Fix Manually

You may find outdated lines with

grep -Ri litespeedtech /etc/apt/*

Install the GPG Keys and Sources

wget -qO - https://rpms.litespeedtech.com/debian/lst_repo.gpg | sudo apt-key add -
sudo echo "deb http://rpms.litespeedtech.com/debian/ focal main" > /etc/apt/sources.list.d/openlitespeed.list

then run apt-get update and it should be gone.