GlassFish 4, Grizzly Framework 2.3.23: Instance could not be initialized. Class=interface org.glassfish.grizzly.http.server.AddOn
<p>While starting GlassFish 4.1.1 server (Grizzly Framework 2.3.23), below warning message is displayed: Instance could not be initialized. Class=interface org.glassfish.grizzly.http.server.AddOn</p>

<p>Do Grizzly Framework 2.3.23 to be separately installed on the computer? (As per details: "Class=interface org.glassfish.grizzly.http.server.AddOn" it seems like grizzly http server is part of glassfish) If grizzly http server seperately not needed to be installed, then which instance it is trying to be initialized and failing. </p>

<p>Do GlassFish Plugin for Eclipse is to be added in Spring Tool Suite IDE?</p>

<p>GlassFish 4 server stop and start using command prompt tested:</p>

<pre><code>glassfish4\bin&gt;asadmin stop-domain
</code></pre>

<p>Command stop-domain executed successfully.</p>

<pre><code>glassfish4\bin&gt;asadmin start-domain
</code></pre>

<p>Waiting for domain1 to start ;<br>
Successfully started the domain : domain1;<br>
domain  Location: glassfish4\glassfish\domains\domain1;<br>
Log File: glassfish4\glassfish\domains\domain1\logs\server.log;<br>
Admin Port: 4848;<br>
Command start-domain executed successfully.</p>

<p>Still the warning exist as given above. </p>

<p>If Grizzly Framework is inbuilt in GlassFish 4 then, does Grizzly dependency inclusion in the project pom.xml needed explicitly as given below?  (code is from: <a href="https://grizzly.java.net/dependencies.html" rel="nofollow">Grizzly</a>)</p>

<pre><code>&lt;dependencies&gt;
&lt;dependency&gt;
    &lt;groupId&gt;org.glassfish.grizzly&lt;/groupId&gt;
    &lt;artifactId&gt;grizzly-http-server&lt;/artifactId&gt;
    &lt;version&gt;2.3.22&lt;/version&gt;
&lt;/dependency&gt;
&lt;/dependencies&gt;
</code></pre>