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Server cannot be started

Server can have issues with a startup or can crash right after if there is no swap space on the server. To verify this, you can log in to your Linux server using an SSH connection and type:

free -m

Check swap entry like on the screenshot below

If the swap space is 0, then use the below procedure to add it

fallocate -l 2G /swapfile;
chmod 600 /swapfile;
mkswap /swapfile;
swapon /swapfile;
echo "/swapfile swap swap defaults 0 0" >> /etc/fstab;
swapon --show

where 2G is the size of the swap. In most cases, you want to have swap space at least of the size of your memory you have on the server.

For Windows server check your pagefile file size.