I successfully classified the land use/cover for my area of study. When I checked the accuracy assessment, I found an overall training accuracy of 1, validation accuracy of 1, and kappa static of 1. However, I doubt the accuracy and think a coding error occurred. I've included a link below. I need someone to check the code and assist me if there is a problem with the coding. Thank you very much.

GEE code: https://code.earthengine.google.com/2287fa4f883b6191371b589b49e3d14e