node app is working on localhost properly but not on heroku especially '/blog' route

Question

node app is working on localhost properly but not on heroku especially '/blog' route

error on heroku:
2022-08-19T17:15:19.022602+00:00 app[web.1]: /app/index.js:34
2022-08-19T17:15:19.022624+00:00 app[web.1]: const db1=client.db('blogData')
2022-08-19T17:15:19.022625+00:00 app[web.1]: ^
2022-08-19T17:15:19.022626+00:00 app[web.1]:
2022-08-19T17:15:19.022626+00:00 app[web.1]: TypeError: Cannot read properties of undefined (reading 'db')
2022-08-19T17:15:19.022626+00:00 app[web.1]: at /app/index.js:34:26
2022-08-19T17:15:19.022627+00:00 app[web.1]: at Function.connect (/app/node_modules/mongodb/lib/mongo_client.js:231:24)
2022-08-19T17:15:19.022627+00:00 app[web.1]: at /app/index.js:32:17
2022-08-19T17:15:19.022629+00:00 app[web.1]: at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
2022-08-19T17:15:19.022629+00:00 app[web.1]: at next (/app/node_modules/express/lib/router/route.js:144:13)
2022-08-19T17:15:19.022630+00:00 app[web.1]: at Route.dispatch (/app/node_modules/express/lib/router/route.js:114:3)
2022-08-19T17:15:19.022630+00:00 app[web.1]: at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
2022-08-19T17:15:19.022630+00:00 app[web.1]: at /app/node_modules/express/lib/router/index.js:284:15
2022-08-19T17:15:19.022631+00:00 app[web.1]: at Function.process_params (/app/node_modules/express/lib/router/index.js:346:12)
2022-08-19T17:15:19.022631+00:00 app[web.1]: at next (/app/node_modules/express/lib/router/index.js:280:10)
2022-08-19T17:15:19.027159+00:00 app[web.1]: [nodemon] app crashed - waiting for file changes before starting...
2022-08-19T17:21:16.424321+00:00 heroku[web.1]: State changed from up to down
2022-08-19T17:21:16.427649+00:00 heroku[web.1]: State changed from down to starting
2022-08-19T17:21:18.716879+00:00 heroku[web.1]: Starting process with command `npm start`
2022-08-19T17:21:18.957020+00:00 heroku[web.1]: St

Answer 1

<DD> bro can you check my code ...

Answer 2

https://github.com/rankdeveloper/bloggy/blob/main/index.js

<DD> my code 🥲
only blog route is not working on heroku...in my localhost it working properly

Answer 3

<DD> okay np bro 👍

Answer 4

Do you still facing the same error?