Merge pull request #893 from nextcloud/bugfix/noid/ensure-writeln-is-…

…string

fix(command): Ensure that writeln() argument is string

lib/Command/ConfigCreate.php

@@ -26,7 +26,7 @@ protected function configure(): void {
  }
 
  protected function execute(InputInterface $input, OutputInterface $output): int {
- $output->writeln($this->samlSettings->getNewProviderId());
+ $output->writeln((string)$this->samlSettings->getNewProviderId());
  return 0;
  }
 }