Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php >= 8.3 but your php version (7.2.34) does not satisfy that requirement. Problem 2 - Root composer.json requires latte/latte ^3.0 -> satisfiable by latte/latte[v3.0.0, ..., v3.1.0]. - latte/latte[v3.0.0, ..., v3.0.2] require php >=8.0 <8.2 -> your php version (7.2.34) does not satisfy that requirement. - latte/latte[v3.0.7, ..., v3.0.16] require php 8.0 - 8.3 -> your php version (7.2.34) does not satisfy that requirement. - latte/latte[v3.0.18, ..., v3.0.23] require php 8.0 - 8.4 -> your php version (7.2.34) does not satisfy that requirement. - latte/latte[v3.0.24, ..., v3.0.25] require php 8.0 - 8.5 -> your php version (7.2.34) does not satisfy that requirement. - latte/latte[v3.0.3, ..., v3.0.6] require php >=8.0 <8.3 -> your php version (7.2.34) does not satisfy that requirement. - latte/latte v3.1.0 requires php 8.2 - 8.5 -> your php version (7.2.34) does not satisfy that requirement.