#45;&gt;</span> Unsigned.size_t</code></dt><dd><p><code>error ()</code></p><p>The value that olm will return from a function if there was an error</p></dd></dl><dl><dt class="spec value" id="val-account_last_error"><a href="#val-account_last_error" class="anchor"></a><code><span class="keyword">val</span> account_last_error : <span><a href="../Types/Account/index.html#type-t">Types.Account.t</a> Ctypes_static.ptr</span> <span>&#45;&gt;</span> <span>char Ctypes_static.ptr</span></code></dt><dd><p><code>accou