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java.lang.NullPointerException: 	at weblogic.security.RSApkcs1.encrypt(RSApkcs1.java:104)	at weblogic.security.SSL.CertificateVerify.output(CertificateVerify.java:94)	at weblogic.security.SSL.Handshake.output(Handshake.java:65)	at weblogic.security.Utils.toBytes(Utils.java:313)	at weblogic.security.SSL.SSLSocket.sendHandshake(SSLSocket.java:994)	at weblogic.security.SSL.SSLSocket.clientInit(SSLSocket.java:561)	at weblogic.security.SSL.SSLSocket.initialize(SSLSocket.java:276)	at weblogic.security.SSL.SSLSocket.init(SSLSocket.java:222)	at weblogic.security.SSL.SSLSocket.init(SSLSocket.java:114)	at weblogic.security.SSL.SSLSocketFactory.createSocket(SSLSocketFactory.java:106)	at java.lang.reflect.Method.invoke(Native Method)	at com.sun.jndi.ldap.Connection.init(Connection.java:194)	at com.sun.jndi.ldap.LdapClient.init(LdapClient.java:108)	at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2379)	at com.sun.jndi.ldap.LdapCtx.init(LdapCtx.java:239)	at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.java:74)	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:660)	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:241)	at javax.naming.InitialContext.init(InitialContext.java:217)	at javax.naming.ldap.InitialLdapContext.init(InitialLdapContext.java:128)	at com.mentisgroup.common.util.LDAPDataSource.init(Unknown Source)	at com.mentisgroup.common.util.LDAPDataSourceFactory.makeObject(Unknown Source)	at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:771)	at com.mentisgroup.common.util.LDAPDataSourcePoolImpl.getDataSource(Unknown Source)	at com.mentisgroup.common.manager.LDAPApplicationContext.getConnection(Unknown Source)	at com.mentisgroup.common.dao.CommonLDAPDAO.search(Unknown Source)	at com.mentisgroup.common.dao.LDAPStatement.executeSearch(Unknown Source)	at com.mentisgroup.common.dao.util.LDAPQueryParser.execute(Unknown Source)	at com.mentisgroup.appmanagement.common.dao.UserLDAPDAOImpl.findUserByUserName(Unknown Source)	at com.mentisgroup.appmanagement.common.domain.UserDO.findUserByUserName(Unknown Source)	at com.mentisgroup.appmanagement.idm.manager.IdentityInfoImpl.searchUserByUsername(Unknown Source)	at com.mentisgroup.common.security.IdentityProvider.getUserInfo(Unknown Source)	at com.mentisgroup.common.webtier.CommonAction.isAuthorized(Unknown Source)	at com.mentisgroup.common.webtier.CommonAction.execute(Unknown Source)	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1058)	at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:401)	at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:20)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:5451)	at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:780)	at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3105)	at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2588)	at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:213)	at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)