Heroku connect.sessions() memory leak, not scaled

while trying to deploy an App with heroku that has API calls and connects to a database...

error log: "connect.session() MemoryStore is not designed for a production environment, as it will leak memory, and will not scale past a single process."

I'm using sessions like so...

app.use(session({
    secret: "I am nerdier than most",
    saveUninitialized: true,
    resave: true,
    cookie: { maxAge: 60000 }
}));

How do I go about fixing the error?

Locally, I can run the app just fine. I'm connecting to a postgres db through massive.

via theman0123