Your requirements could not be resolved to an installable set of packages. Problem 1 - laravel/nova is locked to version 4.35.8 and an update of this package was not requested. - Root composer.json requires laravel/spark-stripe * -> satisfiable by laravel/spark-stripe[dev-improve-vat-id-handling, dev-workbench, dev-feature-plan-visibility, dev-develop, v1.0.0, ..., 1.x-dev, v2.0.0, ..., 2.x-dev, v3.0.0, ..., 3.x-dev, v4.0.0, ..., 4.x-dev, v5.0.0, ..., 5.x-dev]. - inertiajs/inertia-laravel[v0.5.2, ..., v0.6.3] require laravel/framework ^6.0|^7.0|^8.74|^9.0 -> satisfiable by laravel/framework[v8.75.0, ..., 8.x-dev]. - laravel/nova 4.35.8 requires inertiajs/inertia-laravel ^0.4.5|^0.5.2|^0.6.0|^1.0 -> satisfiable by inertiajs/inertia-laravel[v0.4.5, ..., v0.6.11, v1.0.0, ..., 1.x-dev]. - Conclusion: install illuminate/contracts v9.52.16 (conflict analysis result) - Only one of these can be installed: illuminate/contracts[v8.12.0, ..., 8.x-dev, v9.0.0-beta.1, ..., 9.x-dev], laravel/framework[v8.83.26, ..., 8.x-dev]. laravel/framework replaces illuminate/contracts and thus cannot coexist with it.