java.lang.NullPointerException: This exception has no message.

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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.(SSLSocket.java:222)
at weblogic.security.SSL.SSLSocket.(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.(Connection.java:194)
at com.sun.jndi.ldap.LdapClient.(LdapClient.java:108)
at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2379)
at com.sun.jndi.ldap.LdapCtx.(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.(InitialLdapContext.java:128)
at com.mentisgroup.common.util.LDAPDataSource.(Unknown Source)
at com.mentisgroup.common.util.LDAPDataSourceFactory.makeObject(Unknown Source)
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 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.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:780)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3105)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:213)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)

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