Deploying in tomcat with exception: Cannot find operation isServiced : <p>I installed Tomcat and Tomcat Manager on a remote server as per the instructions on <a href="https://www.digitalocean.com/community/tutorials/how-to-install-apache-tomcat-8-on-ubuntu-16-04" rel="noreferrer">this post</a>. </p>

<p>After adding it I successfully accessed the manager on <code>http://IP_ADDRESS:8080/manager/html</code></p>

<p>Then I used the war file upload option to try to deploy the war file on it but it gives the following exception.</p>

<p><code>FAIL - Deploy Upload Failed, Exception: Cannot find operation isServiced</code></p>

<p><a href="https://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/manager/ManagerServlet.html#isServiced(java.lang.String)" rel="noreferrer">Documentation on <code>isServiced</code></a></p>
