Product pages on Amazon.com Inc. failed to load for a short period Wednesday afternoon.

Shoppers who clicked on product pages around 3:30 p.m. Central on Wednesday received the following error message: “Sorry, something went wrong on our end. Please go back and try again or go to Amazon’s home page.”

The issue appeared to be fixed about a half hour later based on an Internet Retailer check of multiple product pages. Amazon did not immediately return a request for comment on why its site was experiencing issues.

The problems began at 12:28 p.m. Eastern and peaked just before 3 p.m. Eastern, with DownDetector.com receiving 5,666 reports of issues with Amazon. DownDetector.com is a site based in the Netherlands that collects status reports and information about disruptions on websites.

DownDetector.com’s data shows Amazon’s problems were primarily with the website (46%), with other shoppers having problems logging in (34%) and checking out (19%). Amazon’s issues were concentrated in the United States, primarily in the Northeast around New York and on the West Coast from Washington to California.

This is not the first time this year Amazon’s site has had issues. The retail giant, No. 1 in the Internet Retailer 2017 Top 500, experienced outages in April. Amazon also experienced an outage in March 2016 that left its site inaccessible for 20 minutes. Internet Retailer estimated that outage cost Amazon $3.75 million in missed sales.