Question about lidar data

[daydreamer2023]

I got a Error Truncated data with the codes:

import sys
sys.path.append("/usr/lib/zendar")
sys.path.append("./viewer")

import data_pb2
from lidar_points_frame import LidarPointsFrame
from radar_data_streamer import (
    ProtoStreamReader,
    ProtoStreamWriter,
)

lidar_pbs_path = 'XXX/ZENDAR/2020-02-12_2237/004/lidar/00/stream.pbs'
data = ProtoStreamReader(lidar_pbs_path, data_pb2.LidarPointsFrame, LidarPointsFrame,header_size=8)  
data.__enter__()  
data = iter(data)  
lidar_clouds = next(data)
for pt in lidar_clouds.point_cloud: 
    print(pt.position_local)

ZendarSDK/python/viewer/radar_data_streamer.py

Lines 148 to 151 in bf2c304

	data = fp.read(msg_length)
	if len(data) != msg_length:
	print('Truncated data')
	return None