Is anyone learning ReactJS experiencing an error: “ENOSPC: System limit for number of file watchers reached“? I just experienced it. But don’t worry because there is a solution.

This error occurs when running the “npm start” command. Causes of ENOSPC errors: System limit for number of file watchers reached because the number of files monitored by the system has reached its limit.


Solution:

The way is to modify the amount in the monitoring system file. Here’s how to modify max_user_watches on Ubuntu. (Ubuntu I use is Ubuntu version 18.04)

1. Open file sysctl.conf (I use VIM to make data modifications)

sudo vim /etc/sysctl.conf

2. Add a line at the bottom 

fs.inotify.max_user_watches=524288

Modify Max User Watches Reactjs Ubuntu Min

3. Save and Reboot your PC.

4. Check again whether it has been updated with the following command

sudo sysctl -p

Please try the ‘npm start‘ command again.

Thus a brief tutorial on how to Fix React Error: ENOSPC: System limit for number of file watchers reached in ReactJS. Hopefully, useful.