The "ClassNotFoundException: org.apache.catalina.core.JasperListener" is caused by a misconfiguration in the Webserver's server.xml file. During the WAAE upgrade, something prevented the Web Server configuration file from being updated.
Previous WAAE releases shipped Tomcat 7 and used to reference the JasperListener class in the server.xml file like so:
<Listener className="org.apache.catalina.core.JasperListener" />
WAAE releases 11.3.6 SP2 and higher are shipped with Tomcat 8. The JasperListener class is no longer supported since Tomcat 8.0.0.
Here is the excerpt from the Apache Tomcat 8 Changelog:
"Initialize the JSP runtime in Jasper's initializer to avoid need for a Jasper-specific lifecycle listener. JasperListener has been removed. (jboynes)"