Email sign in doesn't work in my project.

I connected with Firebase project already it was created before creating FlutterFlow project. In thi firebase project, the sign-in method "email/password" and Facebook are enabled in Firebase console. And I added action "Auth LogIn" to "Sign In" button in my FlutterFlow project. But I faced below issue when I click the sign-in button in test mode.

I checked the settings of Authentication in Firebase console again and again. But I'm sure that I enabled email sign-in method in my Firebase console.

What is wrong on my side?

Error: An unknown error occurred: FirebaseError:
Firebase: The given sign-in provider is disabled for this
Firebase project. Enable it in the Firebase console,
under the sign-in method tab of the Auth section.
(auth/operation-not-allowed).