Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires medicalmundi/npi-registry-php-sdk ^0.1.2 -> satisfiable by medicalmundi/npi-registry-php-sdk[v0.1.2]. - medicalmundi/npi-registry-php-sdk v0.1.2 requires php ^7.4 -> your php version (7.3.33) does not satisfy that requirement.