Your Composer dependencies require a PHP version ">= 7.3.0". You are running 7.2.34 code example

Example 1: Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 7.3.0".

composer install --ignore-platform-reqs

Example 2: your composer dependencies require a php version ">= 7.3.0"

Project or global composer.json file

{

"config": {

    "platform-check": false
}

}