Your requirements could not be resolved to an installable set of packages. Problem 1 - phpspec/phpspec[7.0.0, ..., 7.1.0] require php ^7.3 || 8.0.* -> your php version (7.2.34) does not satisfy that requirement. - phpspec/phpspec 7.2.0 requires php ^7.3 || 8.0.* || 8.1.* -> your php version (7.2.34) does not satisfy that requirement. - phpspec/phpspec[7.3.0, ..., 7.4.0] require php ^7.3 || 8.0.* || 8.1.* || 8.2.* -> your php version (7.2.34) does not satisfy that requirement. - phpspec/phpspec 7.5.0 requires php ^7.3 || 8.0.* || 8.1.* || 8.2.* || 8.3.* -> your php version (7.2.34) does not satisfy that requirement. - Root composer.json requires phpspec/phpspec ^7.0 -> satisfiable by phpspec/phpspec[7.0.0, ..., 7.5.0].