Heroku - error KnexTimeoutError: Knex: Timeout acquiring a connection. The pool is probably full. Are you missing a .transacting(trx) call?

@DMehaffy Thank you for the fast answer!
By the way, I have the database Heroku Postgres (Hobby Basic).

Should I rather upgrade my Strap dyno Type or my database, or both? :beer:
Many thanks!