eCode r"><a class="sourceLine" id="cb4-1" title="1"><span class="kw"><a href="reference/attempt.html">attempt</a></span>(<span class="kw">log</span>(<span class="st">"a"</span>))</a>
<a class="sourceLine" id="cb4-2" title="2"><span class="co"># Error: non-numeric argument to mathematical function</span></a>
<a class="sourceLine" id="cb4-3" title="3"><span class="kw"><a href="reference/attempt.html">attempt</a></span>(<span class="kw">log</span>(<span class="st">"a"</span>), <span class="dt">msg =</span> <sp