How many rows of SkinThickness data were identified as missing (replaced with NaN) before imputation?

How many rows of SkinThickness data were identified as missing (replaced with NaN) before imputation?: a task in SmolDataEnvs-harbor-train-sandbox: 📊 SmolDataEnvs: Harbor (train) (Harbor dataset). Files (in /home/user/input, no subfolders): - diabetes.csv