If your coffee-crazed coworkers are a little cranky today, cut them some slack.

A computer meltdown meant many Starbucks locations nationwide – including some in Austin and surrounding areas – weren’t able to process orders for frappuccinos, caramel macchiatos and other fancy coffee drinks.

The company has yet to explain what exactly happened.

On Twitter, an American-Statesman reader said the Starbucks in The Parke shopping center in Cedar Park was offering free brewed coffee to disappointed customers who pulled up. Nothing else was available.

@gdinges@statesman@Starbucks Yes the new store in Cedar Park along 183 was systems down, offering free brewed coffee to people who pulled up.

— The Hand (@darkchocoIate) May 16, 2017

Free coffee and tea were also being handed out at two Starbucks locations in San Antonio’s Medical Center, according to another Twitter post from Barbara Mohs.

If you happen to stop in and grab a free cup of joe, Mohs has a bit of advice for you: “Tip well. Employees losing a day of tips.”

@gdinges@Starbucks Yes. Two in San Antonio medical center are down and giving away free coffee and tea. Tip well. Employees losing a day of tips.

— Barbara Mohs (@Animohs) May 16, 2017