Meld Windows shows error when git external call it

I am running Meld 3.18.2 on Windows 10 64-bit, installed with the binary installer program downloaded from meldmerge.org.

And I config git's.gitconfigin order to config Meld as difftool for git.

I run "git difftool -y <file>"command on git bash to external call Meld, but when I quit Meld, It prints error on git bash.

There is the error message.

Traceback (most recent call last):
  File "bin/meld", line 328, in structured_log_adapter
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa1 in position 103: invalid start byte
Traceback (most recent call last):
  File "bin/meld", line 328, in structured_log_adapter
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa1 in position 103: invalid start byte
Traceback (most recent call last):
  File "bin/meld", line 328, in structured_log_adapter
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa1 in position 103: invalid start byte