Error Weblogic Server 12C and iReport 5.1.0

 Hello,

I have an app developed in Java and works fine in Weblogic Server 10.3.5 in all environments (development, test and production).

I migrated the app to Weblogic Server 12C and works fine a exception of reports in PDF and XLS. These reports are generated with iReport 5.1.0.

I think the problem is by libraries. In my enviroment of development I wrote this lines in my weblogic-application.xml:

<wls:prefer-application-packages>

<wls:package-name>antlr.*</wls:package-name>

<wls:package-name>xwork.*</wls:package-name>

<wls:package-name>org.objectweb.asm.*</wls:package-name>

</wls:prefer-application-packages>

With the line of ASM my app works in enviroment development but not work in enviroment test.