I am following this tutorial: https://aws.amazon.com/getting-started/hands-on/deploy-wordpress-with-amazon-rds/?refid=dd707452-50b0-4e41-9f2b-d84c7ca273d4 in an attempt to create my own wordpress server on ec2 / rds of AWS. However, I DO NOT want to run this line because wordpress does not like php7.2. This is my second time through, and the first thing I found was that I needed to upgrade php, which does not seem possible