"FATAL ERROR: id exceeds numerical limit in string-util.cpp : StringUtilUtf8"

[zzzwan]

Hello, while using kytea library with a long string, we hit the above error when calling mapString. Is there a way to workaround this issue?

[zzzwan]

Way to reproduce:
In /api/api-example.cc, replace the content in KyteaString surface_string = util->mapString() with our string and run. I could share this string file if you need