Your requirements could not be resolved to an installable set of packages. Problem 1 - spatie/laravel-package-tools[1.4.3, ..., 1.12.1] require php ^7.4|^8.0 -> your php version (7.3.33) does not satisfy that requirement. - spatie/laravel-package-tools[1.13.0, ..., 1.16.1] require php ^8.0 -> your php version (7.3.33) does not satisfy that requirement. - Root composer.json requires spatie/laravel-package-tools ^1.4.3 -> satisfiable by spatie/laravel-package-tools[1.4.3, ..., 1.16.1].