Parameter #1 $messages of method Symfony\Component\Console\Output\OutputInterface::writeln() expects iterable<string>|string, string|false given.

Process completed with exit code 1.

src/Report/Reporter/CheckstyleReporter.php:26:28: PossiblyNullReference: Cannot call method addAttribute on possibly null value (see https://psalm.dev/083)

src/Report/Reporter/CheckstyleReporter.php:30:33: PossiblyNullReference: Cannot call method addAttribute on possibly null value (see https://psalm.dev/083)

src/Report/Reporter/CheckstyleReporter.php:38:26: PossiblyInvalidArgument: Argument 1 of Symfony\Component\Console\Output\OutputInterface::writeln expects iterable<mixed, mixed>|string, but possibly different type bool|string provided (see https://psalm.dev/092)