Cursor control application error: FileNotFoundError: [Errno 2] No such file or directory: 'hand_pose.json'

[ztbupt]

The first(Hand Pose demo) and second(Hand gesture recoginition) demo work good, but the third(Cursor control application) demo meet below issues:

Traceback (most recent call last):
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 3508, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "/tmp/ipykernel_9901/750183242.py", line 1, in
with open('hand_pose.json', 'r') as f:
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 284, in _modified_open
return io_open(file, *args, **kwargs)
FileNotFoundError: [Errno 2] No such file or directory: 'hand_pose.json'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 2105, in showtraceback
stb = self.InteractiveTB.structured_traceback(
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1396, in structured_traceback
return FormattedTB.structured_traceback(
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1287, in structured_traceback
return VerboseTB.structured_traceback(
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1140, in structured_traceback
formatted_exception = self.format_exception_as_a_whole(etype, evalue, etb, number_of_lines_of_context,
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1030, in format_exception_as_a_whole
self.get_records(etb, number_of_lines_of_context, tb_offset) if etb else []
File "/home/em3/.local/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1082, in get_records
style = stack_data.style_with_executing_node(style, self._tb_highlight)
File "/home/em3/.local/lib/python3.8/site-packages/stack_data/core.py", line 455, in style_with_executing_node
class NewStyle(style):
File "/usr/lib/python3/dist-packages/pygments/style.py", line 91, in new
ndef[4] = colorformat(styledef[3:])
File "/usr/lib/python3/dist-packages/pygments/style.py", line 58, in colorformat
assert False, "wrong color format %r" % text
AssertionError: wrong color format 'ansiyellow'