Your requirements could not be resolved to an installable set of packages. Problem 1 - matthiasnoback/symfony-config-test 4.2.1 requires symfony/config ^2.7 || ^3.4 || ^4.0 || ^5.0 -> found symfony/config[v2.7.0, ..., v2.8.52, v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.44, v5.0.0, ..., v5.4.40] but these were not loaded, likely because it conflicts with another require. - matthiasnoback/symfony-config-test 4.3.0 requires symfony/config ^4.4 || ^5.3 || ^6.0 -> found symfony/config[v4.4.0, ..., v4.4.44, v5.3.0, ..., v5.4.40, v6.0.0, ..., v6.4.8] but these were not loaded, likely because it conflicts with another require. - Root composer.json requires matthiasnoback/symfony-config-test ^4.2.1 -> satisfiable by matthiasnoback/symfony-config-test[4.2.1, 4.3.0].

Process completed with exit code 2.

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