I created my hello world JSF project, but when I deploy to Tomcat 7, I get this exception:
java.lang.IllegalStateException: Could not find backup for factory
Thanks to My colleuge , @Lookub at stackoverflow ,he added another apache server and the set the port as 8084 , it all compiled. As ide, we are using netbeans 8.2.You may do this at Services>>Servers menu . Hope this helps.