Your requirements could not be resolved to an installable set of packages. Problem 1 - omines/oauth2-gitlab 3.5.0 requires php >=8.0 -> your php version (7.3.33) does not satisfy that requirement. - omines/oauth2-gitlab 3.6.0 requires php >=8.1 -> your php version (7.3.33) does not satisfy that requirement. - Root composer.json requires omines/oauth2-gitlab ^3.5.0 -> satisfiable by omines/oauth2-gitlab[3.5.0, 3.6.0].