I used the new_version_plus package but got the following warning and couldn't build the app to the App store:
Package new_version_plus:ios references com.codesfirst.new_version_plus:ios as the default plugin, but the package does not exist, or is not a plugin package.
Ask the maintainers of new_version_plus to either avoid referencing a default implementation via platforms: ios: default_package: com.codesfirst.new_version_plus or create a plugin named com.codesfirst.new_version_plus.