About the One-dimensional Poisson’s equation with boundary layer solution

[HyyydeXD]

Hello Ehsan,
I changed the u_exit() and the f_exit() in the hp-vpinn-poission-1d.py with the same equation in the paper as:

    def u_ext(x):
        utemp = 0.1 * np.sin(5 * np.pi * x) + np.e**(-99 - 100 * x)
        return amp * utemp

    def f_ext(x):
        gtemp = -(0.5 * np.cos(5 * np.pi * x) - 100 * np.e**(-99 - 100 * x))
        return -amp * gtemp

However, I cant get the same solution, instead I get a completely wrong solution. BTW I didn't change anywhere else but this two functions.
And I noticed that the output of the lossv is weird. It seems too small. Maybe the wrong loss is to be blamed.
Could you please tell me where I went wrong?

Best
Hyde

[HyyydeXD]

And would you please upload the codes about solving the Bugers' Equation? That would be of great help.