An error occurred output in JSON

[striveman1379]

./run_yextend -r /home/myfiles/yara/rules/email_index.yar -t /home/file/20200522141244/redis2.4.5.zip -j

JSON parse error : [json.exception.parse_error.101] parse error at 25: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara½'
JSON parse error : [json.exception.parse_error.101] parse error at 25: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara½'
JSON parse error : [json.exception.parse_error.101] parse error at 25: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 135: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 136: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 138: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 136: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 137: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 141: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 139: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 138: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 143: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 138: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 138: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 142: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 143: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 141: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 141: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 142: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 130: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 149: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 148: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 139: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yara¼'
JSON parse error : [json.exception.parse_error.101] parse error at 28: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"yextend¼'
JSON parse error : [json.exception.parse_error.101] parse error at 22: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"͡'
JSON parse error : [json.exception.parse_error.101] parse error at 21: syntax error - invalid string: ill-formed UTF-8 byte; last read: '"³'
[
{
"file_name": "/home/file/20200522141244/redis2.4.5.zip",
"file_signature_MD5": "04616571230f01b5dd5cadf66e8b22ee",
"file_size": 236768,
"yara_ruleset_file_name": "/home/myfiles/yara/rules/email_index.yar"
}
]