Yarn ERROR: There are no scenarios; must have at least one

Question

I tried to install Yarn and when I used the yarn command I got:

00h00m00s 0/0: : ERROR: There are no scenarios; must have at least one.

Answer 1

You've got the wrong yarn. The yarn you're executing comes from the cmdtest package. Uninstalling cmdtest first should fix this:

sudo apt remove cmdtest

Once you've uninstalled it, run the commands below to install yarn properly:

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt update
sudo apt install yarn