The job was canceled because "_7_3" failed.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ^7.0 but your php version (8.1.2) does not satisfy that requirement. Problem 2 - Root composer.json requires phpspec/prophecy ^1.10 -> satisfiable by phpspec/prophecy[1.10.0, ..., v1.20.0]. - Root composer.json requires phpunit/phpunit ^5.2 -> satisfiable by phpunit/phpunit[5.2.0, ..., 5.7.27]. - phpunit/phpunit[5.2.0, ..., 5.2.7] require sebastian/exporter ~1.2 -> satisfiable by sebastian/exporter[1.2.0, 1.2.1, 1.2.2]. - phpunit/phpunit[5.2.8, ..., 5.7.27] require php ^5.6 || ^7.0 -> your php version (8.1.2) does not satisfy that requirement. - Conclusion: don't install sebastian/exporter 1.2.2 (conflict analysis result)