Twitter has been hit by a global outage that is preventing thousands of users from accessing the social media platform.

Many users have complained of seeing the “Cannot retrieve tweets” error message when they try to view or post tweets.

According to Down Detector, a website that tracks online service disruptions, nearly 4,000 reports of issues with Twitter have been logged so far.

Twitter has not yet acknowledged the outage or provided any explanation for the cause of the problem.