Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires oat-sa/extension-tao-lti dev-671a61391f2564af39df5b306d21acc3928eae7c as v99.99.99 -> satisfiable by oat-sa/extension-tao-lti[dev-671a61391f2564af39df5b306d21acc3928eae7c]. - oat-sa/extension-tao-lti dev-671a61391f2564af39df5b306d21acc3928eae7c requires oat-sa/lib-lti1p3-core ~7 -> satisfiable by oat-sa/lib-lti1p3-core[7.0.0, ..., 7.0.5]. - oat-sa/lib-lti1p3-core[7.0.0, ..., 7.0.1] require psr/cache ^2.0 || ^3.0 -> satisfiable by psr/cache[2.0.0, 3.0.0, 3.0.x-dev]. - Conclusion: don't install one of psr/cache[1.0.1], oat-sa/lib-lti1p3-core[7.0.5] (conflict analysis result) - Conclusion: install psr/cache 1.0.1 (conflict analysis result) - You can only install one version of a package, so only one of these can be installed: psr/cache[1.0.0, 1.0.1, 2.0.0, 3.0.0, 3.0.x-dev].

Process completed with exit code 2.