7 files declare their use of OutputFormatterInterface in Zircon Profile 8

ConsoleOutput.php in vendor/symfony/console/Output/ConsoleOutput.php

Helper.php in vendor/symfony/console/Helper/Helper.php

NullOutput.php in vendor/symfony/console/Output/NullOutput.php

Output.php in vendor/symfony/console/Output/Output.php

OutputInterface.php in vendor/symfony/console/Output/OutputInterface.php

OutputStyle.php in vendor/symfony/console/Style/OutputStyle.php

StreamOutput.php in vendor/symfony/console/Output/StreamOutput.php