segfault when generating gt

[YuFengUofR]

Hi,

When I run the command "python3 generate_gt_database.py --class_name 'Car' --split train", I encounter a segfault. I was able to compile all the source code.

Here is the error message:
'''
process gt sample (id=000000)
No gt object
process gt sample (id=000003)
Segmentation fault (core dumped)
'''