6 files declare their use of WebformLibrariesManagerInterface in Webform 8.5

WebformAdminConfigElementsForm.php in src/Form/AdminConfig/WebformAdminConfigElementsForm.php

WebformAdminConfigLibrariesForm.php in src/Form/AdminConfig/WebformAdminConfigLibrariesForm.php

WebformEditorialController.php in modules/webform_editorial/src/Controller/WebformEditorialController.php

WebformElementBase.php in src/Plugin/WebformElementBase.php

WebformManagedFileBase.php in src/Plugin/WebformElement/WebformManagedFileBase.php

WebformSignature.php in src/Plugin/WebformElement/WebformSignature.php