Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires bluecadet/bluecadet_gcse * -> satisfiable by bluecadet/bluecadet_gcse[2.0.x-dev]. - bluecadet/bluecadet_gcse 2.0.x-dev requires composer/installers ^1.9 -> found composer/installers[v1.9.0, ..., 1.x-dev] but it conflicts with your root composer.json require (^2.0). Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Process completed with exit code 2.