This error typically occurs due to permission issues with npm and Git. Here’s how you can resolve it:

1. Check Git Installation Ensure Git is installed and accessible:

git --version If not installed, install it using:

sudo apt update && sudo apt install git

2. Fix Permission Issues Run the following to take ownership of the npm directory:

sudo chown -R $(whoami) ~/.npm sudo chown -R $(whoami) /usr/lib/node_modules

3. Clear NPM Cache Try clearing the npm cache:

npm cache clean --force

4. Use Node Version Manager (NVM) Instead If you installed Node.js via sudo apt install nodejs, it may cause permission issues. Using NVM can prevent this:

curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.4/install.sh | bash source ~/.bashrc nvm install node nvm use node Then reinstall MERN CLI without sudo:

npm install -g mern-cli

5. Try Installing Without Global Flag If the issue persists, install MERN CLI locally:

npx mern-cli

If you still face problems, consider hiring expert MERN stack developers from GraffersID to streamline your development process and avoid technical hurdles!