[Linux] Error: ENOSPC: System limit ...

I can do general frontend work, but I’m not specialized in front end. Today when I run up the front-end project, I met the following issue.

Error: Watchpack Error (watcher): Error: ENOSPC: System limit for number of file watchers reached...

The reason is that there is restriction of opening files by one process in Linux. The default number of opening file might be too limited especially when you run with webpack. The solution is to increase the limitation. You can change as below.

sudo vi /etc/sysctl.conf

# Add the below on the end of the file 
fs.inotify.max_user_watches=524288

sudo sysctl -p