fix lỗi proc_open fork failed - Cannot allocate memory

Khi bạn thao tác với laravel nhưng xuất hiện lỗi: proc_open fork failed - Cannot allocate memory

Lỗi hiện thị

The following exception is caused by a lack of memory or swap, or not having swap configured
Check https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-fork-failed-errors for details

In Process.php line 344:
                                                     
  proc_open(): fork failed - Cannot allocate memory  
                                                     

require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--update-with-all-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] [<packages>]...

Cách fix lỗi

/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
sbin/mkswap /var/swap.1
/sbin/swapon /var/swap.1

Test lại composer thấy ok ngay bạn nhớ 😄