Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nextcloud/ocp dev-stable30 -> satisfiable by nextcloud/ocp[dev-stable30]. - nextcloud/ocp dev-stable30 requires psr/log ^2.0.0 -> found psr/log[2.0.0] but it conflicts with your root composer.json require (^1). Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.