error on count character

[javansolo]

\Symfony\Polyfill\Mbstring\Mbstring::mb_strlen error on count string:

�هت استخدام در ایتا:
{
    "نام": "خهعحخح",
    "نام_خانوادگی": "5765756",
    "کدملی": "567567",
    "تاریخ_تولد": "خخخ",
    "محل_تولد": "",
    "محل_سکونت": "678678",
    "وضعیت_تاهل": "مجرد",
    "تعدا_فرزندان": "",
    "وضعیت_نظام_وظیفه": "پایان خدمت",
    "آمادگی_همکاری": "تمام وقت",
    "سنوات_پرداخت_حق_بیمه": "دارم",
    "سنوات_حق_بیمه": "",
    "شماره_�%

[Nicolas Grekas]

I'm sorry I don't understand the error. Could you maybe give us a reproducer as code, or as a PR with a failing test case?

[Nicolas Grekas]

Closing due to lack of activity.