Maintaining a Drupal site is usually smooth sailing once the environment is properly set up. However, even in a stable environment, updates to modules can sometimes reveal underlying configuration issues that weren't apparent before. This was the case when I updated a contrib module on a Drupal 10.3 site, which suddenly started throwing errors related to the mbstring PHP extension.   The problem The problem first surfaced after updating the search_api_attachments contrib module. The Drupal...