rviz point cloud2 erro

[YuehChuan]

got erro in rviz which shows out

Transform [sender=unknown_publisher]
For frame [/camera]: No transform to fixed frame [camera_init_2]. TF error: [Lookup would require extrapolation into the future. Requested time 1387742885.907055000 but the latest data is at time 1387742882.556785107, when looking up transform from frame [camera] to frame [camera_init_2]]

thanks

[YuehChuan]

[pcl::KdTreeFLANN::setInputCloud] Cannot create a KDTree with an empty input cloud!

[thomastangcy]

Hi, did you figure out how to fix this error?