What are the common causes of this 'error parsing uri scheme' error?

Common causes include: 1) Incorrect URI format. 2) Typos in username, password, host, or port. 3) Invalid MongoDB server address or port. 4) Issues with authentication credentials (wrong password or account disabled). 5) Networking problems preventing connection to the MongoDB server. 6) Incorrect use of `mongodb+srv://` when `mongodb://` is required, or vice versa.