Skewness value for that variable is 0.023 and kurtosis is 0.002. And QQ plots also show normality but Shapiro Wilk and K-S test show the value of 0.00 (p< .001). Means null hypothesis is accepted that data is not normally distributed.
I wonder what’s wrong with these tests then? Why despite of minute skewness and kurtosis, it is not giving significant value for alternate hypothesis.