Getting error while trying to get the data from the collection

Why is this getting me parse error? is there something wrong in the syntax? I’m trying to get the data from the collection.

Error: You need to call Parse.initialize before using Parse.

const postsQuery = new Moralis.Query("Posts");

    postsQuery.find()

    .then(() => {

        console.log("Posts loaded successfully");

    })

    .catch(() => {

        console.log("Error loading Posts");

    })

    console.log(postsQuery)

most of the time this error is because Moralis.start was not used and serverUrl and appId were not set