ann&quot;, lastName = &quot;Hesse&quot; }
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Function `toFullName` is expecting the argument to be:
# `toFullName`&#x95A2;&#x6570;&#x306F;&#x4EE5;&#x4E0B;&#x306E;&#x578B;&#x306E;&#x5F15;&#x6570;&#x3092;&#x671F;&#x5F85;&#x3057;&#x3066;&#x3044;&#x307E;&#x3059;:

    { &#x2026;, firstName : &#x2026; }

But it is:
# &#x3057;&#x304B;&#x3057;&#x3001;&#x5B9F;&#x969B;&#x306F;:

    { &#x2026;, fistName : &#x2026; }

Hint: I compared the record fields and fou