You need to create a swap area on your server. Assign 4GB storage to the swap area.
Please follow this link: https://www.digitalocean.com/community/tutorials/how-to-add-swap-space-on-ubuntu-16-04
You need to create a swap area on your server. Assign 4GB storage to the swap area.
Please follow this link: https://www.digitalocean.com/community/tutorials/how-to-add-swap-space-on-ubuntu-16-04