ExpressJS Dynamic routes always return "cannot get"

[Hektor]

Hi, i’ve deployed my NodeJS app containerised with Docker.
Normal fixed url paths work just fine, and API endpoints also work, but dynamic routes don’t (?)
And by dynamic routes, i mean like this:

app.get("/downloadpage/", (req, res) => {
  res.sendFile(path.join(__dirname, "./dist/index.html"));
});

I use MongoDB to store documents, each document’s download page is accessed by their unique _ID
This works perfectly locally using Docker, and also on a Linux VM (without docker)
I’m assuming the issue is related to render, so i kindly ask, is there any way to fix this?
(The app is a WebService)
Thanks for reading

[mmaddex]

Hi Hektor,

Are you getting errors when attempting to access your MongoDB? It would be most helpful if you could share those error logs.

Can you confirm you’re pointing Render to a valid MongoDB URL? Sometimes you may need to add your outbound Render IP addresses with your Mongo hosting provider.

Regards,

Matt