It sounds like you don't have the GD extension installed. I don't use Ubuntu any longer, but I think it may be named php5-gd,...
How To Rewrite URLs with mod_rewrite for Apache on Ubuntu 20
Prerequisites
To follow this tutorial, you will need:
One Ubuntu 16.04 server set up with this...
Problem adding USB host device to KVM Windows guest machine.
Windows machine guest info
Description of problem:
Trying to add USB host device – storage and...
Samba Server installation on Ubuntu 18
Ubuntu Tips: Install Samba File Server
About This Guide
In this text, I teach how to create a network share via Samba using the CLI (Command-line interface/Linux Terminal) in an uncomplicated, simple and brief way targeting Windows users.
1. Configure Proxy Clients
Configure proxy settings like follows on Debian Client.
root@client:~# vi /etc/profile
# add follows to the end (set proxy settings...


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