fplot shows no output

I'm trying to solve a simple differential equation, which works with no problem, but when trying to plot it only ezplot seems to be working, no luck with fplot

syms y(t)
a = 1;
b = 10;
D = diff(y,t) == -a * y * log(y/b);
C = y(0) == 5;
psolution = dsolve(D,C)
gsolution = dsolve(D)

fplot(psolution)

It's really nothing too fancy but I don't understand what's going wrong. This is the output:

Answer 1

[Star Strider]

Try this:

figure
fplot(real(psolution))
hold on
fplot(imag(psolution))
hold off
grid
set(gca, 'YScale','log', 'Ylim',[min(ylim) 100])
legend('Re','Im')

The rest of your code is unchanged.

EDIT — (25 Jul 2020 at 01:07)

Added plot image:

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