Root composer.json требует PHP ^7.2.5, но ваша версия PHP (8.0.6) не удовлетворяет этому требованию.
composer install --ignore-platform-reqs
Xenophobic Xenomorph
composer install --ignore-platform-reqsIt'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",
.....
},