d(phi)/dt=​laplaciano​(-phi+phi^​3-laplacia​no(phi)) given boundary conditions and a initial state (strange result)

It is given d(phi)/dt=laplaciano(-phi+phi^3-laplaciano(phi)) to solve in a square 30*30 (L=30).

It is also mentioned that phi(1, y) = 1 and phi(L, y) =

[DDD]

It is not accepting the whole question