gnome-terminal failing to launch in Ubuntu 18.04 (Chrome remote desktop broke gnome-terminal)

I was able to fix the issue by uninstalling Chrome remote desktop by running $ sudo apt remove chrome-remote-desktop

I found the solution on https://ubuntuforums.org/showthread.php?t=2383992

First, try reinstalling gnome-terminal:

sudo apt update
sudo apt install --reinstall gnome-terminal

Next, run the following command to run gnome-terminal in verbose mode to see if there is any output:

gnome-terminal --verbose

If all else fails you can install xfce4-terminal instead:

sudo apt update
sudo apt install xfce4-terminal

Then, you can set xfce-terminal as the default terminal to start on CTRL+ALT+T by first running the following command:

sudo update-alternatives --config x-terminal-emulator

Then, select the number for xfce4-terminal and then press ENTER

You should now be able to run xfce4-terminal by pressing CTRL+ALT+T

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