Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires sampoyigi/testbench ^1.0, found sampoyigi/testbench[dev-main, 1.0.x-dev (alias of dev-main)] but it does not match your minimum-stability. Problem 2 - Root composer.json requires tastyigniter/core ^v4.0 -> satisfiable by tastyigniter/core[v4.0.0]. - tastyigniter/core v4.0.0 requires tastyigniter/ti-ext-cart ^4.0 -> found tastyigniter/ti-ext-cart[v4.0.0-beta.1, v4.x-dev] but it does not match your minimum-stability. Problem 3 - Root composer.json requires tastyigniter/ti-ext-user ^v4.0 -> satisfiable by tastyigniter/ti-ext-user[v4.0.0]. - tastyigniter/core v4.0.0 requires tastyigniter/ti-ext-cart ^4.0 -> found tastyigniter/ti-ext-cart[v4.0.0-beta.1, v4.x-dev] but it does not match your minimum-stability. - tastyigniter/ti-ext-user v4.0.0 requires tastyigniter/core ^v4.0 -> satisfiable by tastyigniter/core[v4.0.0].