in py_call_impl(callable, dots$args, dots$keywords): InvalidArgumentError: assertion failed: </span>
<span class="co"># [&lt;Assert condition R expression&gt;: `x &gt; 0`] [`x` value:] [-1] </span>
<span class="co"># [&lt;R call stack&gt;:] </span>
<span class="co"># [&lt;R call 1&gt;: stopifnot(x &gt; 0)] </span>
<span class="co"># [&lt;R call 2&gt;: fn(...)] </span>
<span class="co"># [&lt;R call 3&gt;: withVisible(fn(...))] </span>
<span class="co"># [&lt;R call 4&gt;: fn()] </span>
<span class="co"># [&