Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpro/grumphp dev-b150d47490fba1027445c078f81e879937d1cf00@dev, found phpro/grumphp[v2.8.0] but it does not match the constraint.