Mansfield Town's accounts (along with Forest Green's) are the fakest of fakery.
They don't report significant losses because the clubs are "sponsored" heavily by their owners giving them wildly more commercial income than the clubs are capable of generating. Well, unless you truly believe that Mansfield Town has a greater commercial income (£3.1m) than Nottingham Forest (£2.9m)
I've nothing against that, by the way. As far as I'm concerned it's a legitimate way of bankrolling a club providing the owner can prove to the EFL they have the funds in place.