How to install PHP (7, 7.2 or 7.3) on Ubuntu
https://thishosting.rocks/install-php-on-ubuntu/
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Quick start guide: Plesk on Amazon Lightsail
https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-quick-start-guide-plesk
https://thishosting.rocks/install-php-on-ubuntu/
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https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-quick-start-guide-plesk