This is a common error for people on VPS or certain hosting providers, for example infinityfree.

If you have your own VPS with root access, it’s an easy fix:

First, check your php version

php -v

Next, install the relevant imagick package, but first do:

sudo apt update

then, enter the relevant installer package for your php version, for example – if your php version came up as 7.4.30, then enter:

sudo apt install php7.4-imagick

Finally, restart the apache 2 service by entering either of the two commands below:

systemctl restart apache2

OR

service apache2 reload