Tesco appeared to suffer a major outage online and in-store on Thursday evening (4 January).Customers trying to log in to shop online were met with a message that read: "There's a problem at our end, but we're trying to fix it right now. Sorry for any inconvenience. Please come back later and try again."Thanks for your patience."Several social media users also claimed that they were unable to checkout - with one complaining that they "left empty-handed" after spending two hours shopping in-store."Can’t get into app or website to finish my shop," another X user said.PA