error on catalina.out

[cram2swsoft]

How can I fix it?

I installed a tomcat webapp and when I try to run it shows the following error in catalina.out:

26-Nov-08 5:50:33 AM org.apache.catalina.core.ApplicationContext log
INFO: Manager: init: Global resources are available
26-Nov-08 5:50:33 AM org.apache.catalina.core.ApplicationContext log
INFO: Manager: list: Listing contexts for virtual host 'corpbaraco.com'
load the merchant object in the TAG
ERROR : java.lang.ClassNotFoundException: sun.security.provider.DSAPrivateKey
Info: 4
Merchant = null