Target faced a register outage that lasted for about 90 minutes on Sunday (June 16), which meant it couldn’t process cards or other forms of payment.

The complication caused long lines and wait times in the store, and the company placed the blame on an issue related to a vendor, according to a report by Reuters.

The outage was the second one in a week experienced by the retail giant, and the company blamed payments vendor NCR, saying that there was an issue in a data center that completely affected the store.

There was a separate glitch on Saturday (June 15) which the company told Reuters was not related to the Sunday one. The Saturday outage was called an “internal technology issue” that didn’t let customers in the U.S. pay for things they wanted to buy in the store.

The company also said that there was no security issue and that no payment or personal data was leaked.

In 2014, the company dealt with something similar with its payment processing systems.

Target also recently said that it was making same-day delivery though Shipt available to all of its shoppers, according to a report by CNBC.

The retailer’s June 13 announcement shows Target is moving to compete with Amazon and Walmart in an ongoing bid to provide customers with the quickest delivery service.

Target said online customers in 47 states can now get items delivered the same day for a flat fee of $9.99 per order. Target acquired Shipt in 2017 for $550 million. Previously, Target customers could get same-day delivery by being a Shipt member for $99 a year.

That’s still an option, but now if a customer just wants one-day delivery for just one order, they can do that too.

Walmart and Amazon both recently announced options for next-day delivery as well, and Walmart recently said it planned to reach 75 percent of all American shoppers with quicker shipping by the end of next year.