Javascript – Reference Error: Property firebase doesn't exist

LOG [ReferenceError: Property ‘firebase’ doesn’t exist]

I didn’t change anything in my code but all of a sudden, when I try to create a user, using firebase’s authentication, it says property ‘firebase’ doesn’t exist. The promise doesn’t kick in after creating the user. What can I do?

const signUp = async () => {
    await getDocs(createdUserDoc)
    .then((user) => {
        if(user.convoCode === convoCode){
            setConvoCode(Math.random().toString(36).slice(6))
        }
    })
    await auth.createUserWithEmailAndPassword(email, password)
    .then(createdUser => {
        setDoc(doc(db, `users`, auth.currentUser.uid), {
            email,
            convoCode,
            id: createdUser.user.uid,
            timestamp: firebase.firestore.FieldValue.serverTimestamp(),
            bio: "I don't got a bio🥱",
            image: 'https://firebasestorage.googleapis.com/v0/b/convoapp-91392.appspot.com/o/4112f225-1b3f-47a3-b2eb-d2b99dfd3996.jpg?alt=media&token=5c8177f3-51f7-4d77-a761-ef6b5c6ce1a0',  
        })
        router.push('/authentication/AddUsernameScreen')
        setPassword('')
        setEmail('')
    })
    .catch((err) => {
        toastRef.current.show({
            type: 'error',
            text: `${err.message}`,
            duration: 5000
          })
        console.log(err)
        return;
    })
}

I’ve tried rolling back my code to days before today, but it still gives the same thing. I don’t know what to do because I didn’t change anything in my code. And I’m under pressure to push the update over the weekend