[`UC-2OlIhAKqYeEqwfk02nUbA`](https://www.youtube.com/channel/UC-2OlIhAKqYeEqwfk02nUbA) has a regular `uploads` playlist id [`
UU-2OlIhAKqYeEqwfk02nUbA`](https://www.youtube.com/playlist?list=UU-2OlIhAKqYeEqwfk02nUbA) returned by YouTube Data API v3 [`channels?part=contentDetails&id=UC-2OlIhAKqYeEqwfk02nUbA`](https://yt.lemnoslife.com/noKey/channels?part=contentDetails&id=UC-2OlIhAKqYeEqwfk02nUbA). However the YouTube UI returns `The playlist does not exist.` and YouTube Data API v3 [`playlistItems?part=snippet&playlistId=UU-2OlIhAKqYeEqwfk02nUbA`](https://yt.lemnoslife.com/noKey/playlistItems?part=snippet&playlistId=UU-2OlIhAKqYeEqwfk02nUbA) returns a `playlistNotFound` error.
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UC-2OlIhAKqYeEqwfk02nUbAhas a regularuploadsplaylist idUU-2OlIhAKqYeEqwfk02nUbAreturned by YouTube Data API v3channels?part=contentDetails&id=UC-2OlIhAKqYeEqwfk02nUbA. However the YouTube UI returnsThe playlist does not exist.and YouTube Data API v3playlistItems?part=snippet&playlistId=UU-2OlIhAKqYeEqwfk02nUbAreturns aplaylistNotFounderror.