Starbucks‘ payment system is currently experiencing outages across the US and Canada, and the coffee giant is giving away free drinks at locations affected by the outage.

Twitter was flooded Tuesday morning with people reporting that their local Starbucks’ payment systems were down, CNBC first reported. Due to the outage, registers were unable to process payments.

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Many customers are celebrating the news. Instead of turning people away, Starbucks locations have been giving out free drinks.

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A Starbucks spokesperson told Business Insider that the outage is due to a tech update that was installed overnight at certain stores in the US and Canada.

"A limited number of locations remain offline, and we are working swiftly to resume full operations in each of these stores," the spokesperson said. "The stores will remain open during this time and, as always, our partners are prepared to take care of our customers to ensure they have the best experience possible."

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As of Tuesday afternoon, Starbucks said "virtually all" stores were once again operational.

This isn't the first time in recent months that Starbucks has struggled with its payments technology.

BuzzFeed and Fortune have reported on concerns about the security of the chain's app, which lacks two-factor authentication - a standard security feature that has become the norm for payments systems. BuzzFeed's Venessa Wong reported in early May that someone hacked her app and stole $100 from her account.