Update twitter script to api V2

I have a hosted laravel CMS that posts scheduled tweets that have been previously entered into a DB. Currently when I try to publish a tweet, nothing happens and the error log shows "You currently have access to a subset of Twitter API v2 endpoints and limited v1.1 endpoints (e.g. media post, oauth) only. If you need access to this endpoint, you may need a different access level."

My guess is this has something to do with an api update to v2. I would like someone to update the api connection to v2 and update the endpoints on this existing script so the tweets can post once again.