Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires olstjos/wxt, it could not be found in any version, there may be a typo in the package name. Problem 2 - Root composer.json requires drupal/core-dev 11.1.* -> satisfiable by drupal/core-dev[11.1.0-beta1, ..., 11.1.x-dev]. - composer/composer[2.9.3, ..., 2.9.x-dev] require justinrainbow/json-schema ^6.5.1 -> satisfiable by justinrainbow/json-schema[6.5.1, ..., 6.6.3]. - drupal/core-dev[11.1.0-beta1, ..., 11.1.x-dev] require composer/composer ^2.8.1 -> satisfiable by composer/composer[2.9.3, 2.9.x-dev]. - drupal/core-dev[11.1.0-beta1, ..., 11.1.x-dev] require justinrainbow/json-schema ^5.2 -> satisfiable by justinrainbow/json-schema[5.2.0, ..., 5.x-dev]. - Conclusion: don't install justinrainbow/json-schema 5.3.1 (conflict analysis result) - You can only install one version of a package, so only one of these can be installed: justinrainbow/json-schema[5.2.0, ..., 5.x-dev, 6.5.1, ..., 6.6.3]. Potential causes: - A typo in the package name - The package is not available in a stable-enough version according to your minimum-stability setting see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details. - It's a private package and you forgot to add a custom repository to find it Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.