PHP Fatal error: Composer detected issues in your platform: Your Composer dependencies require a PH

PHP Fatal error: Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 7.4.0". You are running 7.3.4.

解决办法

1、项目下composer.json 中 config 配置 添加 "platform-check": false

"config": {    "platform-check": false},

2、在项目目录下再执行composer命令：“composer dump”