checksum fail message undefined, app.use() duplicate

api/src/index.js

@@ -77,7 +77,6 @@ expressWs(app);
 
     const api_v2 = require('./api/v2');
     app.use('/api/v2', api_v2);
-    app.use('/api/v2', api_v2);
 
     app.use((req, res, next) => {
         return res.status(404).send({ message: 'Not Found' });

api/src/package.js

@@ -80,7 +80,9 @@ class Package {
         const cs = hash.digest('hex');
 
         if (cs !== this.checksum) {
-            throw new Error(`Checksum miss-match want: ${val} got: ${cs}`);
+            throw new Error(
+                `Checksum miss-match want: ${this.checksum} got: ${cs}`
+            );
         }
 
         logger.debug(