React Native Firebase Firestore Error: documentSet is not a Function During User Registration

I'm developing a user registration feature in a React Native app that uses Firebase Firestore to store user details. However, I'm encountering the following TypeError when attempting to write a document:

[TypeError: this._firestore.native.documentSet is not a function (it is undefined)]

Environment:

"react-native": "0.76.5",
"@react-native-firebase/app": "^21.6.2",
"@react-native-firebase/firestore": "^21.6.2",

Testing Device/Emulator: [iOS and Android]

I implemented user registration and data storage using Firestore as follows:

Expected Outcome: Successfully register a user and store their information (first name, last name, email, and registration timestamp) in Firestore.

What I Tried: After registering the user using Firebase Auth, I attempted to write their data to Firestore using the set method.

Code:

JAVASCRIPTCopied
const handleRegister = async () => {
        if (validateInput()) {
            try {
                const userCredential = await registerUserWithEmail(email, password);
                console.log('User registered:', userCredential.user);

                const db = firestore();
                const userRef = db.collection('users').doc(userCredential.user.uid);
                console.log('Firestore Reference:', userRef);

                // Attempt to write to Firestore and log the process
                userRef.set({
                    firstName: firstName,
                    lastName: lastName,
                    email: email,
                    createdAt: firestore.FieldValue.serverTimestamp()
                })
                .then(() => {
                    console.log('User data set in Firestore');
                    Alert.alert('Success', 'Account Created Successfully');
                    navigation.navigate('Login');
                })
                .catch(error => {
                    console.error('Firestore set error:', error);
                    Alert.alert('Registration Failed', error.message);
                });

            } catch (error) {
                console.error('Registration Error:', error);
                Alert.alert('Registration Failed', `${error.message} [${error.code}]`);
            }
        }
    };

The error occurs during the set operation on the Firestore document, which suggests that the native method documentSet may not be properly linked or available.

Debugging Steps Taken:

1. Ensured the Firestore and Firebase SDKs are up-to-date.
2. Verified Firestore permissions to allow write access.
3. Reviewed Firebase documentation to confirm the correct API usage.
4. Added console logs to trace method availability.

The error message remains:
[TypeError: this._firestore.native.documentSet is not a function (it is undefined)]

Any insights or suggestions on how to resolve this issue would be greatly appreciated!