Root Composer.json nécessite PHP ^ 7.2.5 mais votre version PHP (8.0.6) ne satisfait pas à cette exigence.
composer install --ignore-platform-reqs
Xenophobic Xenomorph
composer install --ignore-platform-reqs
It's becouse in your project in composer.json file you have:
"require": {
"php": ">=7.3",
.....
},
Try to update this requirement to:
"require": {
"php": "^7.3|^8.0",
.....
},
Your project using php7.2 version and composer installed with 8.0.1.
Update your composer with php 7.2 instead 8.0.1. problem will solve.