The display of responses generates a php error:
ResponsesController::actionDeleteAttachments(): Implicitly marking parameter $responseId as nullable is deprecated, the explicit nullable type must be used instead
/srv/www/formulaire.unige.ch/html_root/outils/limeemploi/application/controllers/ResponsesController.php(808)

I've patched it adding a "?" before the second "int" on line 808:

diff ResponsesController.php.00 ResponsesController.php
808c808

< public function actionDeleteAttachments(int $surveyId, int $responseId = null): void

public function actionDeleteAttachments(int $surveyId, ?int $responseId = null): void

I've checked, the error is still in v 6.17.10