AWI v12 does not start after deployment

Document ID : KB000087174
Last Modified Date : 14/04/2018
Show Technical Document Details
Issue:
Error Message :
Error in <TOMCAT>/logs/catalina.out: 
### 
Aug 08, 2016 12:26:45 PM org.apache.catalina.core.StandardContext startInternal 
SEVERE: Error listenerStart 
Aug 08, 2016 12:26:45 PM org.apache.catalina.core.StandardContext startInternal 
SEVERE: Context [/AWIv12_build282] startup failed due to previous errors 
### 

and the following in <TOMCAT>/log/localhost.yyyy-mm-dd.log: 
### 
SEVERE: Error configuring application listener of class com.uc4.webui.vaadin.framework.bridge.FelixLauncher 
java.lang.UnsupportedClassVersionError: com/uc4/webui/vaadin/framework/bridge/FelixLauncher : Unsupported major.minor version 52.0 (unable to load class com.uc4.webui.vaadin.framework.bridge.FelixLauncher) 
        at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2961) 
        at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210) 
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690) 
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) 
<...> 
###​

AWI does not start after deployment on Tomcat.
Environment:
OS Version: N/A
Cause:
Cause type:
Configuration
Root Cause: Old Java version
Resolution:
Install Java 8.

Fix Status: No Fix

Fix Version(s):
N/A
Additional Information:
Workaround :
N/A