I have Mark Seam my beer mug and use it to make the beer mug's holder. But the result become like this
Even though i Remove Double it, the seam is still there and worst of it, the top of beer mug split open like in the picture.
How to fix this? Here's the blend file https://pasteall.org/blend/bda4874634c544c2bc84fb0c99fa5392

