Invalid API key

[immanuelkp29794]

hello, do try this link, it consists of steps to get a sign in screen done using firebase by @jane

Sign In Masterpost

This topic will be a thread of posts explaining the different aspects of adding a Sign In component to your app and creating a new version of the Sign In template. Link to the template here. Part 1: Firebase This post will walk you through creating a Firebase project, adding Email Authentication to the project, and adding your project to a Thunkable project. You can also follow these steps to add a Firebase DB to your Thunkable project - just don’t follow the steps for adding email authentic…

make sure you have copied the “API key” and “database URL” details in your thunkable sign in page.
This way, it worked for me