Is this a mesh problem?
 

Hello I am using waves2Foam to simulate a modified 2D wave tank, it is a simple geometry but it has a lot of elements, I made it using blockMesh only so it is a large file
my problem is that I am getting an error and somehow I think it is because of the mesh.

As you can see in the picture the wave stops right there, it should continue along the whole tank but it just stops, I used checkMesh to see if something was wrong with the mesh but it says that the mesh is OK however I get this warning (not quite sure what it means)

--> FOAM Warning :
From function polyMesh:: polyMesh(... construct from shapes...)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 901
Found 4 undefined faces in mesh; adding to default patch.

Anyway I can provide any file that you want to look at if you want to help me.

Thanks