huzefa-amura

Too late to answer now but if someone else might stumble upon this question in future, in my case, below steps solved the above-mentioned error:

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
rails webpacker:install

Hope this helps !!!