secretOrPrivateKey must be an asymmetric key when using RS256

* Operating System version: Ubuntu 22.10
* Firebase SDK version: 11.3.0
* Firebase Product: auth
* Node.js version: 16.13.2
* NPM version: 8.19.2

### [REQUIRED] Step 3: Describe the problem

I am using Firebase-Admin on a NestJs API, build with NX ; my API is using Admin SDK to create and manage users. For that, I am using the method auth.createUser({email, password}), but Firebase throws an error, ONLY FOR THE FIRST CALL :

`secretOrPrivateKey must be an asymmetric key when using RS256`

I know my private key is readed right, and most of all, only the first call to createUser returns error ; other calls are working great.. So I ended up putting a call with fake datas right after the initialization of Firebase, to be able to use it in other parts of my app, but it doesn't seem so terrible..! I can't find any other people having the same issue, really weird.

Any idea ?