codecs.py parse 0xE3 bug may be. BUILD FAILED occurred on 'Install to iOS Device'

app.js wrote following one line.

// としてTi.U.PICKER_TYPE_DATEを

Install to iOS Device , then BUILD FAILED occur.

--build.log--
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe3 in position 43: ordinal not in range(128)
Command /bin/sh failed with exit code 1

• • BUILD FAILED **
    --/build.log--

---app.js source code hex dump —
[1036][sugie@mini-ssd:Resources]$od -cx app.js
0000000 / / と ** ** し ** ** て ** ** T i . U
2f2f e320 a881 81e3 e397 a681 6954 552e
0000020 . P I C K E R _ T Y P E _ D A T
502e 4349 454b 5f52 5954 4550 445f 5441
0000040 E を ** ** \n
e345 9282 000a
0000045
[1036][sugie@mini-ssd:Resources]$
---/app.js source code hex dump —

There are some 'e3' codes.

May be codecs.py can not parse 'e3' code.