The Cloud Firestore emulator is not running

[REQUIRED] Environment info

firebase-tools: v8.15.1

Platform: macOS

[REQUIRED] Test cases

Start emulators. Start function shell.

[REQUIRED] Steps to reproduce

Really unsure. I ran firebase emulators:start --only functions,firestore and it works fine, the emulators I mean. Then I run firebase functions:shell and test my functions and functions do not update when I save them.

[REQUIRED] Expected behavior

For the functions shell to update my functions when I update them after running firebase:shell and for it to detect that my emulator is running locally.

[REQUIRED] Actual behavior

Output of firebase functions:shell:

$ firebase functions:shell
⚠  functions: Your GOOGLE_APPLICATION_CREDENTIALS environment variable points to /Users/user/dev/project/app/serviceKey.json. Non-emulated services will access production using these credentials. Be careful!
⚠  functions: The Cloud Firestore emulator is not running, so calls to Firestore will affect production.
i  functions: Loaded functions: ..., nuxtssr
i  functions: Connected to running firestore emulator at localhost:8080, calls to this service will affect the emulator
⚠  functions: The following emulators are not running, calls to these services will affect production: database, pubsub

[rublev]

Turns out everything is fine. All I had to do was call it with test.testFunction3('') instead of test.testFunction3() like before. Why do I have to add data to the parameter now magically to get it working? I have no idea, nowhere did I see this in a changelog or anything. Yesterday it stopped working, now adding an empty string param has it executing just fine.

Love losing 2 days for zero reason. Lovely.

[rublev]

functions code:

const admin = require('firebase-admin')

const functions = require('firebase-functions')

exports.testFunction2 = functions.https.onCall((data, context) => {
  console.log('test')
  return { test1: true }
})

No matter what code I changed in my function, I get:

firebase > >  {"severity":"WARNING","message":"Request body is missing data."}
>  {"severity":"ERROR","message":"Invalid request, unable to process."}

RESPONSE RECEIVED FROM FUNCTION: 400, {
  "error": {
    "message": "Bad Request",
    "status": "INVALID_ARGUMENT"
  }
}

If I change the function name to testFunction3 or anything else, it updates in the emulator a la: ✔ functions[test-testFunction2]: http function initialized (http://localhost:5001/proj-1234/us-central1/test-testFunction2). but it always yields the same error and never prints the log. Same when I visit the 5001/proj-1234/us-central1/test-testFunction2 URL, same output every time:

{
error: {
message: "Bad Request",
status: "INVALID_ARGUMENT"
}
}