exception

javax.servlet.ServletException: Servlet.init() for servlet authorize threw exception
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:615)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

root cause

java.lang.NullPointerException
	edu.uiuc.ncsa.security.core.configuration.Configurations.getFirstNode(Configurations.java:185)
	edu.uiuc.ncsa.security.util.ssl.SSLConfigurationUtil.getSSLConfiguration(SSLConfigurationUtil.java:194)
	edu.uiuc.ncsa.myproxy.oa4mp.server.MyProxyFacadeProvider.get(MyProxyFacadeProvider.java:89)
	edu.uiuc.ncsa.myproxy.oa4mp.server.MyProxyServiceEnvironment.getMyProxyServices(MyProxyServiceEnvironment.java:44)
	edu.uiuc.ncsa.myproxy.oa4mp.server.servlet.AbstractConfigurationLoader.load(AbstractConfigurationLoader.java:414)
	edu.uiuc.ncsa.myproxy.oa4mp.server.servlet.AbstractConfigurationLoader.load(AbstractConfigurationLoader.java:49)
	edu.uiuc.ncsa.myproxy.oa4mp.server.servlet.EnvServlet.loadProperties2(EnvServlet.java:21)
	edu.uiuc.ncsa.myproxy.oa4mp.server.servlet.MyProxyDelegationServlet.loadProperties2(MyProxyDelegationServlet.java:79)
	edu.uiuc.ncsa.myproxy.oa4mp.server.servlet.EnvServlet.loadEnvironment(EnvServlet.java:29)
	edu.uiuc.ncsa.security.servlet.AbstractServlet.init(AbstractServlet.java:245)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:615)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)