refresh to readme send back error

README.md

@@ -20,4 +20,11 @@ https://example.vercel.app/authorize?port=4200
 https://localhost:4200/{CALLBACK_URL}?access_token={access_token}&refresh_token={refresh_token}&expires_in={expires_in}
 7. profit?
 
+To resfresh the token request this
+POST: 
+https://example.vercel.app/refresh?port=4200
+body: refresh_token : {refreshtoken}
+
+new token should be send like in 6
+
 ## use at own risk, security holes might be in there 

server.js

@@ -60,7 +60,7 @@ app.get('/refresh', (req, res) => {
           console.log(data)
           res.redirect(`http://localhost:${callbackport}/${process.env.CALLBACK_URL}?access_token=${data.access_token}&refresh_token=${data.refresh_token}&expires_in=${data.expires_in}`);
         })
-        .catch(error => console.error('Error:', error));
+        .catch(error => res.json(error));
     
       } catch (error) {
         console.error(error);