Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nextcloud/ocp ^28 -> satisfiable by nextcloud/ocp[v28.0.0, ..., v28.0.9]. - nextcloud/ocp[v28.0.0, ..., v28.0.9] require psr/container ^2.0.2 -> found psr/container[2.0.2] but it conflicts with your root composer.json require (^1.1.2). Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.