Thank you for send.

I seem to have returned a correct response. However, a wrong character-code seems to be included.

QUOTE:
hexadecimal value 0x1C, is an invalid character. Line 71, position 28.

The error went out when testing to return the response log that you sent.
The character that doesn't exist in the article in UTF-8 is included or there seems correctly to be a character that is not UTF-8.
Please correct a past article.

It seems that it is because different character encode exists together.

Thanks