Base & Stem - odd texture issue

[StandUp_Gamer]

Looks ok in the Viewport

But when rendered, texture is missing on some parts.

[FedPete]

Is it possible that you have two disks occupying the same space (a duplicate of the lamp foot)?

[StandUp_Gamer]

Ah ! Well done, I did in fact have a second object left over from earlier in the lecture, deleted it and we’re all good.
(I’ve changed the shape a bit too)