What should I do if composer appears Killed during installation and is terminated?

I got an error when installing phpspreadsheet using composer:

Check Related information This situation is caused by insufficient cache. In Linux, we can increase the cache to solve this problem. The specific operations are as follows:

free -m 
mkdir -p /var/\_swap\_ 
cd /var/\_swap\_ 
dd if\=/dev/zero of\=swapfile bs=1M count=2000 
mkswap swapfile 
swapon swapfile 
echo "/var/\_swap\_/swapfile none swap sw 0 0" >> /etc/fstab free -m

You can follow these commands successfully. I hope this article can help you

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