Your requirements could not be resolved to an installable set of packages.
Problem 1
- Root composer.json requires phpspec/prophecy ^1.19 -> satisfiable by phpspec/prophecy[v1.19.0].
- phpspec/prophecy v1.19.0 requires php ^7.2 || 8.0.* || 8.1.* || 8.2.* || 8.3.* -> your php version (8.4.0-dev) does not satisfy that requirement.
Problem 2
- phpspec/prophecy v1.19.0 requires php ^7.2 || 8.0.* || 8.1.* || 8.2.* || 8.3.* -> your php version (8.4.0-dev) does not satisfy that requirement.
- phpspec/prophecy-phpunit v2.2.0 requires phpspec/prophecy ^1.18 -> satisfiable by phpspec/prophecy[v1.19.0].
- Root composer.json requires phpspec/prophecy-phpunit ^2.2 -> satisfiable by phpspec/prophecy-phpunit[v2.2.0].