Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ^8.0 but your php version (7.3.33) does not satisfy that requirement. Problem 2 - Root composer.json requires helsingborg-stad/blade ^3.5.0 -> satisfiable by helsingborg-stad/blade[3.5.0, 3.5.1]. - helsingborg-stad/blade[3.5.0, ..., 3.5.1] require php ^7.4|^8.0 -> your php version (7.3.33) does not satisfy that requirement.