résolution de l'erreur lors de l'absence de checker

ui/src/composable/application/DatePattern.js

@@ -44,7 +44,7 @@ export function patternCheckerDateRef(application, columnName, refId) {
                 }
             }
         }
-    } else if (application.configuration.references && application.configuration.references[refId].columns[columnName].checker
+    } else if (application.configuration.references && application.configuration.references[refId].columns[columnName]?.checker
         && application.configuration.references && application.configuration.references[refId].columns[columnName].checker.params.pattern) {
         return application.configuration.references[refId].columns[columnName].checker.params.pattern;
     }