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java.io.IOException: Configuration Error:
        Line 2: expected [controlFlag]	at com.sun.security.auth.login.ConfigFile.match(Unknown Source)	at com.sun.security.auth.login.ConfigFile.parseLoginEntry(Unknown Source)	at com.sun.security.auth.login.ConfigFile.readConfig(Unknown Source)	at com.sun.security.auth.login.ConfigFile.init(Unknown Source)	at com.sun.security.auth.login.ConfigFile.init(Unknown Source)	at com.sun.security.auth.login.ConfigFile.(Unknown Source)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)	at java.lang.reflect.Constructor.newInstance(Unknown Source)	at java.lang.Class.newInstance(Unknown Source)	at javax.security.auth.login.Configuration$3.run(Unknown Source)	at javax.security.auth.login.Configuration$3.run(Unknown Source)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.login.Configuration.getConfiguration(Unknown Source)	at javax.security.auth.login.LoginContext$1.run(Unknown Source)	at javax.security.auth.login.LoginContext$1.run(Unknown Source)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.login.LoginContext.init(Unknown Source)	at javax.security.auth.login.LoginContext.(Unknown Source)	at net.sourceforge.spnego.SpnegoHttpURLConnection.(SpnegoHttpURLConnection.java:206)	at undefined.HelloKeytab.main(HelloKeytab.java:15)