<async-supported>true</async-supported> in web.xml
<p>Someone help me plss, i got this error when i put async-supported tag in web.xml:</p>

<blockquote>
  <p>cvc-complex-type.2.4.a: Invalid content was found starting with element 'async-supported'. One of '{"<a href="http://java.sun.com/xml/ns/javaee" rel="nofollow">http://java.sun.com/xml/ns/javaee</a>":run-as, "<a href="http://java.sun.com/xml/ns/javaee" rel="nofollow">http://java.sun.com/xml/ns/javaee</a>":security-role-ref}' is expected.</p>
</blockquote>

<p>this is my web.xml</p>

<pre><code>&lt;web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"&gt;
&lt;servlet&gt;
    &lt;servlet-name&gt;Jersey Web Application&lt;/servlet-name&gt;
    &lt;servlet-class&gt;org.glassfish.jersey.servlet.ServletContainer&lt;/servlet-class&gt;
    &lt;init-param&gt;
        &lt;param-name&gt;jersey.config.server.provider.packages&lt;/param-name&gt;
        &lt;param-value&gt;com.yeditepeim.messenger.resources&lt;/param-value&gt;
    &lt;/init-param&gt;
    &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
   &lt;async-supported&gt;true&lt;/async-supported&gt;
&lt;/servlet&gt;
&lt;servlet-mapping&gt;
    &lt;servlet-name&gt;Jersey Web Application&lt;/servlet-name&gt;
    &lt;url-pattern&gt;/webapi/*&lt;/url-pattern&gt;
&lt;/servlet-mapping&gt;
</code></pre>

<p></p>