System limit for number of file watchers reached

This error is very common on Linux when working with large projects (which has many dependencies in ( node_modules).

The error ENOSPC: System limit for number of file watchers reached your operating system has hit the limit on the number of files it can monitor for real-time changes (something tools like Webpack or Vite do constantly).

To fix it, you need to increase the inotify limit on your system. Here is how to do it:

Quick Solution (Temporary until restart)

Run this command in your terminal to increase the limit immediately:

sudo sysctl fs.inotify.max_user_watches=524288

Try starting your app again; it should work now.

Permanent Solution (Persists after restart)

To avoid having to type the command every time you restart your computer:

1. Add the configuration to the sysctl.conf Add the configuration to the (or you can create a file in .d):

echo "fs.inotify.max_user_watches=524288" | sudo tee -a /etc/sysctl.conf

2. Apply the changes:

sudo sysctl -p

With this, the file watcher limit will be high enough to handle all the files in your project and its dependencies.