Your requirements could not be resolved to an installable set of packages. Problem 1 - code-lts/doctum[v5.5.1, ..., 5.x-dev] require symfony/yaml ~3.4|~4.3|^5|^6 -> satisfiable by symfony/yaml[v3.4.0-BETA1, ..., 3.4.x-dev, v4.3.0-BETA1, ..., 4.4.x-dev, v5.0.0-BETA1, ..., 5.4.x-dev, v6.0.0-BETA1, ..., 6.4.x-dev]. - code-lts/doctum v5.5.0 requires symfony/yaml ~3.4|~4.3|~5.1|~5.2 -> satisfiable by symfony/yaml[v3.4.0-BETA1, ..., 3.4.x-dev, v4.3.0-BETA1, ..., 4.4.x-dev, v5.1.0-BETA1, ..., 5.4.x-dev]. - You can only install one version of a package, so only one of these can be installed: symfony/yaml[v3.4.0-BETA1, ..., 3.4.x-dev, v4.3.0-BETA1, ..., 4.4.x-dev, v5.0.0-BETA1, ..., 5.4.x-dev, v6.0.0-BETA1, ..., 6.4.x-dev, v7.0.0-BETA1, ..., 7.1.x-dev]. - orchestra/testbench v9.0.2 requires symfony/yaml ^7.0 -> satisfiable by symfony/yaml[v7.0.0-BETA1, ..., 7.1.x-dev]. - symfony/yaml[v4.3.0-BETA1, ..., v4.4.8] require php ^7.1.3 -> your php version (8.3.6) does not satisfy that requirement. - symfony/yaml[v5.0.0-BETA1, ..., v5.0.0-RC1] require php ^7.2.9 -> your php version (8.3.6) does not satisfy that requirement. - symfony/yaml[v5.0.0, ..., v5.1.0-RC1] require php ^7.2.5 -> your php version (8.3.6) does not satisfy that requirement. - Root composer.json requires orchestra/testbench 9.0.2 -> satisfiable by orchestra/testbench[v9.0.2]. - Root composer.json requires code-lts/doctum ^5.5 -> satisfiable by code-lts/doctum[v5.5.0, ..., 5.x-dev].

Process completed with exit code 2.