"select files" and "start audio conversations" can't work on macOS

Exception in Tkinter callback
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/tkinter/init.py", line 1892, in call
return self.func(args)
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/FreeSimpleGUI/elements/button.py", line 352, in ButtonCallBack
is_all = [(x, y) for (x, y) in filetypes if all(ch in ' .' for ch in y)]
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/FreeSimpleGUI/elements/button.py", line 352, in
is_all = [(x, y) for (x, y) in filetypes if all(ch in '* .' for ch in y)]
ValueError: too many values to unpack (expected 2)
Exception in Tkinter callback
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/tkinter/init.py", line 1892, in call
return self.func(args)
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/FreeSimpleGUI/elements/button.py", line 352, in ButtonCallBack
is_all = [(x, y) for (x, y) in filetypes if all(ch in ' .' for ch in y)]
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/FreeSimpleGUI/elements/button.py", line 352, in
is_all = [(x, y) for (x, y) in filetypes if all(ch in '* .' for ch in y)]
ValueError: too many values to unpack (expected 2)

Input device: 0:MacBook Pro麦克风
Output device: 4:VB-Cable
cuda_is_available: False
Index search FAILED or disabled
Spent time: fea = 0.052s, index = 0.000s, f0 = 0.017s, model = 0.047s
Exception ignored from cffi callback <function _StreamBase.init..callback_ptr at 0x7fa6406a6b80>:
Traceback (most recent call last):
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/sounddevice.py", line 897, in callback_ptr
return _wrap_callback(
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/sounddevice.py", line 2743, in _wrap_callback
callback(*args)
File "gui_v1.py", line 977, in audio_callback
_, sola_offset = torch.max(cor_nom[0, 0] / cor_den[0, 0])
File "/Users/shiyu/Documents/GitHub/Retrieval-based-Voice-Conversion-WebUI/.venv/lib/python3.8/site-packages/torch/_tensor.py", line 1022, in iter
raise TypeError("iteration over a 0-d tensor")
TypeError: iteration over a 0-d tensor

Reproduce the two macOS failures from the issue, starting with the FreeSimpleGUI traceback for file selection and gui_v1.py line 977 for the audio callback. Inspect those reported call sites and verify that selecting files and starting audio conversations complete without the listed exceptions.