Question Calculatepath gives always zero corners and invalid path

I tried with agent and navmesh CalculatePath but both give me zero corners and invalid path status, dont understand why, i set agent.destination so should work

if(NavMesh.CalculatePath(hitNav.position, PlayerManagement.Instance.playerGround, NavMesh.AllAreas, newpath))
if (agent.CalculatePath(hitNav.position, newpath))

 

Tried this and both samplepositions and calculatepath are true but corners are zero and path is invalid

if (NavMesh.SamplePosition(transform.position, out hitNav, 10f, NavMesh.AllAreas))
{
if (NavMesh.SamplePosition(playerGround, out hitNav2, 10f, NavMesh.AllAreas))
{
NavMeshPath newpath = new NavMeshPath();
if (NavMesh.CalculatePath(hitNav.position, hitNav2.position, NavMesh.AllAreas, newpath))