Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require php >=8.3 -> your php version (8.1.31) does not satisfy that requirement. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require php >=8.3 -> your php version (8.2.27) does not satisfy that requirement. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require php >=8.3 -> your php version (8.1.31) does not satisfy that requirement. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - Root composer.json requires psalm/plugin-phpunit ^0.19.0 -> satisfiable by psalm/plugin-phpunit[0.19.0, 0.19.2]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require sebastian/diff ^7.0.0 -> satisfiable by sebastian/diff[7.0.0]. - Conclusion: don't install sebastian/diff 7.0.0 (conflict analysis result) Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - Root composer.json requires psalm/plugin-phpunit ^0.19.0 -> satisfiable by psalm/plugin-phpunit[0.19.0, 0.19.2]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require sebastian/diff ^7.0.0 -> satisfiable by sebastian/diff[7.0.0]. - Conclusion: don't install sebastian/diff 7.0.0 (conflict analysis result) Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require php >=8.3 -> your php version (8.2.27) does not satisfy that requirement. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^12.0 -> satisfiable by phpunit/phpunit[12.0.0, ..., 12.0.5]. - Root composer.json requires psalm/plugin-phpunit ^0.19.0 -> satisfiable by psalm/plugin-phpunit[0.19.0, 0.19.2]. - phpunit/phpunit[12.0.0, ..., 12.0.5] require sebastian/diff ^7.0.0 -> satisfiable by sebastian/diff[7.0.0]. - Conclusion: don't install sebastian/diff 7.0.0 (conflict analysis result) Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.