Launch file Error

[kvnptl]

When I tried run launch file, it is giving following error continuously

[libprotobuf ERROR google/protobuf/message_lite.cc:123] Can't parse message of type "gazebo.msgs.PosesStamped" because it is missing required fields: pose[0].position.z, pose[1].position.z, pose[2].position.z, pose[3].position.z, pose[4].position.z, pose[5].position.z, pose[6].position.z, pose[7].position.z, pose[8].position.z, pose[9].position.z, pose[10].position.z, pose[11].position.z

I am using ROS Kinetic (Singularity Image) and Gazebo 7.