tools like gulp, webpack and you are using so-called watch (observing changes in files), you may
encounter the following error
Error: ENOSPC: System limit for number of file watchers reached
This means that your system does not allow you to watch any more files. The solution to this
problem is to increase the limit.
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p