try to make fix work

backend/models/modelToucan.js

@@ -13,19 +13,4 @@ var toucanSchema = new Schema ({
 // La date doit être unique
 toucanSchema.index({date:-1},{unique: true});
 
-const toucanModele = mongoose.model("Toucan",toucanSchema);
-
-var toucanDSchema = new Schema ({
-    title: {type : String, required: true}, // Chaque toucan doit avoir un titre et une date
-    date: {type : Date, required: true},
-    issue: {type: Number, required: true},
-    urlId: {type: String, required: true}
-});
-
-// Le numéro doit être unique
-toucanDSchema.index({issue:-1},{unique: true});
-
-const toucanDModele = mongoose.model("ToucanD",toucanDSchema);
-
-
-module.exports = mongoose.model('Toucan', toucanSchema), mongoose.model("ToucanD",toucanDSchema);
\ No newline at end of file
+module.exports = mongoose.model('Toucan', toucanSchema);
\ No newline at end of file

backend/models/modelToucanD.js

+var mongoose = require("mongoose");
+
+var Schema = mongoose.Schema;
+
+var toucanDSchema = new Schema ({
+    title: {type : String, required: true}, // Chaque toucan doit avoir un titre et une date
+    date: {type : Date, required: true},
+    issue: {type: Number, required: true},
+    urlId: {type: String, required: true}
+});
+
+// Le numéro doit être unique
+toucanDSchema.index({issue:-1},{unique: true});
+
+const toucanDModele = mongoose.model("ToucanD",toucanDSchema);
\ No newline at end of file

backend/routes/routesToucan.js

@@ -7,7 +7,7 @@ var { newToucan, validId, validGet, validTitle, validURL} = require("../utils/sc
 var env = require("../.env");
 var isLogged = require("../utils/authentification");
 var upload = require("../utils/fileSaver");
-const { Toucan, ToucanD} = require("../models/modelToucan");
+var Toucan = require("../models/modelToucan");
 var router = express.Router();
 
 router.route("/toucans")