Executing >php composer.phar require mediawiki/maps "*"
gives
./composer.json has been updated
> ComposerHookHandler::onPreUpdate
[RuntimeException] The lock file does not contain require-dev information, run install with the --no-dev option or run update to install those packages.
require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-update] [--update-no-dev] [--update-with-dependencies] [--ignore-platform-reqs] [--sort-packages] [packages1] ... [packagesN]
can anyone tell me what to do?
Ruud Habets