Error: Ground truth kitti labels should only have 15 fields

Please run below to check each line of your label files. Make sure there is not empty line too.

import glob

rootdir = "./label"

for i in glob.glob(rootdir + "/*.txt"):
    with open(i, 'r') as j:
         for line in j.readlines():
             label = line.strip()
             length = len(label.split(" "))
             print("This label have {} fields".format(length))
             assert length == 15, 'Ground truth kitti labels should have only 15 fields. And make sure there is not empty lines. Please check the label in the file %s' % (j)