URI must be ascii only "https://www.linegames.org/ja/\u8131\u51FA\u30B2\u30FC\u30E0\u68EE\u306E\u4E2D\u306E\u8FF7\u3044\u5BB6\u304B\u3089\u306E\u8131\u51FA-codes/337002534335/"
Check out the README for more details