fix: type errors

front/MyINPulse-front/src/components/canvas/CanvasItem.vue

@@ -189,6 +189,17 @@ const fetchData = async (
             handleFetchSuccess(responseData);
         } else {
             if (projectId == -1) {
+                const errorCell = new SectionCell({
+                    idSectionCell: -1,
+                    sectionId: -1,
+                    contentSectionCell: "Échec du chargement des données.",
+                    modificationDate: new Date().toISOString(),
+                });
+
+                currentDescriptions.value = [errorCell];
+                editedDescriptions.value = [errorCell];
+                isEditing.value = [false];
+
                 console.error(
                     "No sections to show because no project was found."
                 );