npm run build gives 404

[andrew4real]

Hey,

I have created a new app using the Shopify App Template for PHP (https://github.com/Shopify/shopify-app-template-php).

When I run

npm run dev

the app works fine in my local development environment.

However, when I try to deploy the app to a server and run

npm run build --api-key=MY_API_KEY

I encounter the following error:

"Building the frontend app without an API key. The frontend build will not run without an API key. Set the SHOPIFY_API_KEY environment variable when running the build command."

To resolve this issue, I tried running the build command with the environment variable set as follows:

SHOPIFY_API_KEY=MY_API_KEY npm run build

This successfully addressed the API key error.

However, now when I attempt to install my app on a development store, the installation flow redirects to the React page I built, but then redirects back to Shopify with a 404 error. It seems that the authentication, app installation, and recurring charge steps are being missed.

Can you please help what am I missing?

Thank you.