Plane don't pitch up when auto takeoff mode

Hi. I’ve a problem about automatic takeoff. I’ve tried several times but my plane can’t take-off in auto mode. When I start the mission, the first waypoint is takeoff, plane is goin faster, I’ve seen almost 19 m/s and plane flied little bit from the ground but the elevator is still stay quite smooth, ie. plane is not climbing to takeoff altitude.
What is problem with that? I’ve tried this parameters with SITL and everythings is going well.