Galette

Lors de l'ajout d'une cotisation, si on s'est trompé dans la date d'adhésion (j'ai par exemple mis 2018 sans le faire exprès) l'application fait un message d'erreur incompréhensible au lieu d'un message clair.
Voici :
AH01071: Got error 'PHP message: Galette error:\nType: Slim\\Exception\\ContainerValueNotFoundException\nMessage: Identifier "hist" is not defined.\nFile: /var/www/vhosts/aufildesreseaux.org/adherents.aufildesreseaux.org/vendor/slim/slim/Slim/Container.php\nLine: 120\nTrace: #0 /var/www/vhosts/aufildesreseaux.org/adherents.aufildesreseaux.org/vendor/slim/slim/Slim/Container.php(172): Slim\\Container->get('hist')\n#1 /var/www/vhosts/aufildesreseaux.org/adherents.aufildesreseaux.org/includes/routes/contributions.routes.php(623): Slim\\Container->__get('hist')\n#2 [internal function]: Closure->{closure}(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Array)\n#3 /var/www/vhosts/aufildesreseaux.org/adherents.aufildesreseaux.org/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(41): call_user_func(Object(Closure), Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Array)\n#4 /var/www/vhosts/aufildesreseaux.org/adherents.aufildesreseaux.org/vendor/slim/slim/Slim/Route.php(344): Slim\\Handlers\\Strategies\\RequestRe...\n', referer: https://adherents.aufildesreseaux.org/webroot/index.php/contribution/cotisation/ajouter?id_adh=60