When starting the ICC WebApplication on your system you will notice the no logs are created under the webapplication log path. In the messages.log of the WebSphere Liberty Profile you will recognize the following error while starting the ICC webapplication AFUWeb.
00000034 com.ibm.ws.webcontainer.webapp E SRVE0283E: Exception caught while initializing context: java.lang.NoClassDefFoundError: com/ibm/misc/BASE64Decoder
The problem is that for any reason the JAVA_HOME variable points for a JAVA version that is not provided by ICC. To solve this issue you need to specify the JAVA_HOME in the server.env under <ICC Installationpath>\AFUWeb\wlp\usr\servers\AFUWeb
The JAVA_HOME must point to the JAVA runtime provided by ICC.