Can't download Exodus, Repo issue?

I am trying to install the Exodus wallet from a .deb file as I thought that would be easier but, when I try to install it from Terminal, I receive this message:

E: The repository 'cdrom://Ubuntu 18.04.3 LTS _Bionic Beaver_ - Release amd64 (20190805) bionic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

How can I solve this and install the .deb?

There are a few things we’ll need to do. First, edit a file so that the update manager is not looking for a CD/DVD with updates, then add the correct repository for updates so you can have an up-to-date system.

You don’t need to use the command line for these steps but, if you would like to, here’s how:

1. Open Terminal (if it’s not already open)

2. Edit the /etc/apt/sources.list file with root privileges:

   sudo vi /etc/apt/sources.list
   

   _{Note: You do not need to use vi. If you prefer a different editor, such as nano, feel free to use it. Be sure to keep sudo up front, though.}

3. Find the line that starts with CDROM and add a # at the start. You should now have a line that looks like:

   # cdrom://Ubuntu 18.04 LTS _Bionic Beaver_ - Release amd64
   

4. Save the file. If you are using vi and are unfamiliar with the commands, you save and exit by first pressing Esc to exit editing mode, then :⇢ W⇢Q (Write & Quit)

   You should now be back at the shell.

With that first step done, let’s add the correct repo for Ubuntu:

1. From the terminal, add the default repo:

   sudo apt-add-repository http://archive.ubuntu.com/ubuntu
   

2. Update apt:

   sudo apt update
   

3. If there are updates, you can install them with:

   sudo apt upgrade
   

   Or:

   sudo apt dist-upgrade
   

Now you might be ready to install Exodus. Rarely does a person need to jump through so many hoops ahead of time, but now the main stuff is complete.

1. Ensure you have the latest version of libgconf installed:

   sudo apt install libgconf-2-4
   

2. Download the .deb file from Exodus.com/download. It’s easiest from a browser but, if you want to do it via the command line:

   wget https://downloads.exodus.com/releases/exodus-linux-x64-21.7.2.deb
   

3. Install the application:

   sudo dpkg -i exodus-linux-x64-21.7.2.deb
   

4. Open the application via the applications menu

That’s all there really is to it.