Statically served vue-router app by Flask shows 404 for custom pages on Heroku - vue.js

Question

I've gone through several Stack Overflow pages and the official Vue guide, but my app still returns 404 results when going to a different page.
The structure of my app looks like this, with a client folder that has the Vue app and a server folder containing app.py that statically serves the index.html in the client/dist folder through Flask.
Contents of static.json are as outlined in the guide:
{
"root": "client/dist",
"clean_urls": true,
"routes": {
"/**": "index.html"
}
}
with just modified root folder to go to client/dist. Running the app locally with npm run serve works, as does opening it up on its Heroku page and clicking on the nav. However, directly going to a page, such as /translate, always returns 404.
I have installed the following buildpacks:
=== readiglot Buildpack URLs
1. heroku/nodejs
2. heroku/python
3. https://github.com/heroku/heroku-buildpack-static
The app is hosted here: https://www.readiglot.herokuapp.com.
On npm run build from the root directory, the dist folder is built by Heroku in the client folder.
Am I missing something? Could anyone advise as to additional configuration?

Answer 1

The answer is in the app.py file - you need to statically serve the file using a catch all route.
#app.route("/", defaults={"path": ""})
#app.route("/<string:path>")
#app.route("/<path:path>")
def index(path):
return app.send_static_file("index.html")
By putting the serve_static_file in the Flask app to redirect from all other routes, 404 only shows up on a true 404.