What is wrong with my specificity and sensitivity?

My model now get 75 % but in the assestment in sensitivety all classes get 0 and specificity get 1 for all classes so why is that happening? It is in isic challenges 2018 you can see it in live leader board called newthingv3 team magnificent minds

Hello Amr. Apologies for addressing this question sooner.

Does this remaining an outstanding issue? If so, please provide a screenshot of the solution’s performance evaluation on the leaderboard so that we can better understand the problem.