AttributeError: 'NoneType' object has no attribute 'name [ SM-t220]

[shyambandla]

python3 -m aospdtgen output/
Android device tree generator
Version 1.0.0

[INFO] Figuring out partitions scheme
[WARNING] Unknown HAL type native
[INFO] Parsing build props and device info
[INFO] Parsing fstab
[INFO] Extracting boot image
[INFO] Cloning AIK...
Traceback (most recent call last):
File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/home/ubuntu/.local/lib/python3.8/site-packages/aospdtgen/main.py", line 11, in
main()
File "/home/ubuntu/.local/lib/python3.8/site-packages/aospdtgen/main.py", line 31, in main
dump = DeviceTree(args.dump_path)
File "/home/ubuntu/.local/lib/python3.8/site-packages/aospdtgen/device_tree.py", line 62, in init
self.boot_configuration = BootConfiguration(self.path)
File "/home/ubuntu/.local/lib/python3.8/site-packages/aospdtgen/utils/boot_configuration.py", line 26, in init
self.boot_image_info = self.boot_aik_manager.unpackimg(self.boot)
File "/home/ubuntu/.local/lib/python3.8/site-packages/sebaubuntu_libs/libaik/init.py", line 109, in unpackimg
image_prefix = image.name
AttributeError: 'NoneType' object has no attribute 'name'

getting this error. please help me