Glitchy mesh after using tesselate

[spidergirl]

I’m brand new , sorry if this is already on here, I couldn’t find it.
I have made a basket using the tissue add on. It worked fine, but on one side there is some weird folding up of vertices .
Can someone tell me how to clean up the mesh or otherwise fix this?

[eelh (Kate White)]

Can you show the base mesh you’ve used for tesselation. Can be something wrong there.
It can also be the side effect of merge option.

[BlenderTimer (Daniel Roberts)]

Did the base mesh have overlapping geometry there?

[spidergirl]