<p></p>
<p>I've figured out what the issue is -- it's the version of Java that is at fault. So, here is what I've got on the system:</p>
<div class="highlight highlight-source-shell"><pre>$ /usr/libexec/java_home -V
Matching Java Virtual Machines (4):
    14.0.2 (x86_64) <span class="pl-s"><span class="pl-pds">"</span>Oracle Corporation<span class="pl-pds">"</span></span> - <span class="pl-s"><span class="pl-pds">"</span>OpenJDK 14.0.2<span class="pl-pds">"</span></span> /Library/Java/JavaVirtualMachines/openjdk-14.0.2.jdk/Contents/Home
    10.0.2 (x86_64) <span class="pl-s"><span class="pl-pds">"</span>Oracle Corporation<span class="pl-pds">"</span></span> - <span class="pl-s"><span class="pl-pds">"</span>OpenJDK 10.0.2<span class="pl-pds">"</span></span> /Library/Java/JavaVirtualMachines/openjdk-10.0.2.jdk/Contents/Home
    1.8.202.08 (x86_64) <span class="pl-s"><span class="pl-pds">"</span>Oracle Corporation<span class="pl-pds">"</span></span> - <span class="pl-s"><span class="pl-pds">"</span>Java<span class="pl-pds">"</span></span> /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
    1.8.0_202 (x86_64) <span class="pl-s"><span class="pl-pds">"</span>Oracle Corporation<span class="pl-pds">"</span></span> - <span class="pl-s"><span class="pl-pds">"</span>Java SE 8<span class="pl-pds">"</span></span> /Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/openjdk-14.0.2.jdk/Contents/Home</pre></div>
<p>And the default one is 14.0.2. If I use that -- I get the error messages reported in this PR. Changes I suggested makes things compile... but there are some issues with the final product.</p>
<p>If I switch to Java 10.0.2 (by setting JAVA_HOME), things compile and work just fine:</p>
<div class="highlight highlight-source-shell"><pre><span class="pl-k">export</span> JAVA_HOME=<span class="pl-s"><span class="pl-pds">`</span>/usr/libexec/java_home -v 10.0.2<span class="pl-pds">`</span></span></pre></div>
<p><a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/ghubstan/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/ghubstan">@ghubstan</a>, could you please confirm that you're using Java 10 (or something close to 10)?</p>

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