I am not unable to find the Inverse Laplace transform of the function
$F_n(s) = 1 - e^{-7.97029702970297*10^{-9}*s^{1.01}}$
Then once $F_n(t)$ is found, I need to found $f_n(t)$. I tried using Inverse Laplace Transformations available online but all of them gave me some error.