When saving files in Drupal 10 I encountered this deprecation error:
$file = \Drupal::service('file.repository')->writeData($binaryimg, $file_path, FileSystemInterface::EXISTS_REPLACE);
@deprecated in
drupal:10.3.0 and is removed from drupal:12.0.0. Use \Drupal\Core\File\FileExists::Rename instead.
Solution
use Drupal\Core\File\FileExists;
$file = \Drupal::service('file.repository')->writeData($binaryimg, $file_path, FileExists::Rename);