Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit[9.0.0, ..., 9.2.6] require php ^7.3 -> your php version (7.1; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. - phpunit/phpunit[9.3.0, ..., 9.3.8] require php ^7.3 || ^8.0 -> your php version (7.1; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. - phpunit/phpunit[9.3.9, ..., 9.6.17] require php >=7.3 -> your php version (7.1; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^9.0.0 -> satisfiable by phpunit/phpunit[9.0.0, ..., 9.6.17]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Process completed with exit code 2.

Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit[8.0.0, ..., 8.5.11] require php ^7.2 -> your php version (7.1; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. - phpunit/phpunit[8.5.12, ..., 8.5.36] require php >=7.2 -> your php version (7.1; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^8.0.0 -> satisfiable by phpunit/phpunit[8.0.0, ..., 8.5.36]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.