Your requirements could not be resolved to an installable set of packages. Problem 1 - orchestra/testbench[v8.14.0, ..., 8.x-dev] require orchestra/workbench ^1.0 -> satisfiable by orchestra/workbench[v1.0.0, 1.x-dev]. - orchestra/testbench v8.13.0 requires orchestra/workbench ^0.4.0 || ^0.5.0 -> satisfiable by orchestra/workbench[v0.4.0, ..., 0.5.x-dev]. - orchestra/workbench[v0.4.2, ..., 0.5.x-dev, v1.0.0, ..., 1.x-dev] require orchestra/canvas ^7.10.0 || ^8.11.0 -> satisfiable by orchestra/canvas[v7.10.0, v7.11.0, v7.11.1, 7.x-dev, v8.11.0, v8.11.1, v8.11.2, 8.x-dev]. - orchestra/workbench[v0.4.0, ..., v0.5.0] require orchestra/canvas ^7.10.0 || ^8.9.0 -> satisfiable by orchestra/canvas[v7.10.0, v7.11.0, v7.11.1, 7.x-dev, v8.9.0, ..., 8.x-dev]. - orchestra/canvas[v8.9.0, ..., v8.10.1] require orchestra/canvas-core ^8.8 -> satisfiable by orchestra/canvas-core[v8.8.0, v8.9.0, v8.10.0, 8.x-dev] from composer repo (https://repo.packagist.org) but orchestra/canvas-core is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - orchestra/canvas[v7.10.0, ..., 7.x-dev] require orchestra/canvas-core ^7.7 -> satisfiable by orchestra/canvas-core[v7.7.0, 7.x-dev] from composer repo (https://repo.packagist.org) but orchestra/canvas-core is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - orchestra/canvas[v8.11.0, ..., 8.x-dev] require orchestra/canvas-core ^8.9 -> satisfiable by orchestra/canvas-core[v8.9.0, v8.10.0, 8.x-dev] from composer repo (https://repo.packagist.org) but orchestra/canvas-core is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - Root composer.json requires orchestra/testbench ^8.13 -> satisfiable by orchestra/testbench[v8.13.0, v8.14.0, 8.x-dev].