Foo Fighters frontman Dave Grohl has found himself in hot water with Taylor Swift fans.

During the band's concert on Saturday night at London Stadium, Grohl, 55, seemingly took a swipe at Swift's vocal abilities. The "Cruel Summer" singer was also in London for her Eras Tour stops at Wembley Stadium.

"I tell you, man, you don't want to suffer the wrath of Taylor Swift. We like to call our tour the 'Errors Tour,'" the Foo Fighters frontman said in video shared on social media.

He continued, "We've had more than a few eras, and more than a few errors as well. Just a couple. That's because we actually play live. What? Just saying."

Following the apparent swipe at Swift's three-and-a-half-hour show, Grohl said, "You guys like raw, live rock 'n' roll music, right? You came to the right place."

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The "Karma" singer's fans were quick to come to her defense on social media.

"Wow Grohl so washed he has to use Taylor's name for free pr? Embarrassing thought he was better than that what a shame," one person wrote on X. Another added: "this is incredibly odd behavior considering this was an incredibly unprovoked statement."

USA TODAY reached out to reps from Grohl and Swift.

Taylor Swift's Eras Tour from VIP tent:Paul McCartney, Cate Blanchett and Jon Bon Jovi watch

Swift, 34, seemingly responded to Grohl during her Eras show on Sunday, taking a moment to thank her team for their show endurance.

"Every one of my band members, every single one of our crew, my band who's going to be playing live for you for three and a half hours tonight, they deserve this so much," she said in a video shared on X. "And so does every one of my fellow performers. And you just gave that to us so generously, we will never forget it."

Prince William, Nicola Coughlan, Sophie Turner, more celebs attend Taylor Swift's Wembley shows

After a weekend full of surprise A-list appearances, London may officially be the most star-studded Eras Tour stop to date.

On Friday, Prince William celebrated his 42nd birthday with his children Prince George, 10, and Princess Charlotte, 9. According to a selfie shared on social media, the trio met with Swift and her boyfriend Travis Kelce before the show.

Joining the Kansas City tight end in the VIP tent on Friday was his brother Jason, sister-in-law Kylie, "Queer Eye" star Jonathan van Ness and "Bridgerton" actress Nicola Coughlan.

Taylor Swift selfie with Prince William,kids goes viral as she goes IG official with Travis Kelce

On Saturday, actors Tom Cruise, Liam Hemsworth, Hugh Grant, Mila Kunis, Ashton Kutcher and director Greta Gerwig were seen dancing to "Shake It Off."

On Sunday, McCartney was joined by Sophie Turner, Gracie Abrams, Ellie Goulding, Cate Blanchett, Phoebe Waller-Bridge, Andrew Scott and Jon Bon Jovi.

Contributing: Bryan West