Getting IllegalArgumentException after pressing TAB key in CLI command

Issue

• Getting the following exception when TAB key is pressed in CLI command at the following point :

[domain@tltdsr000388:9049 /] /profile=bcdomain/subsystem=security/security-domain=web-policy/authentication=classic/:add(login-modules=[{code="abc.xyz.SamlLdapLoginModule",flag="required",module-options=[(

• At this point, CLI throws the following exception if tab key is pressed :

java.lang.IllegalArgumentException
        at org.jboss.dmr.ModelValue.getKeys(ModelValue.java:128)
        at org.jboss.dmr.ModelNode.keys(ModelNode.java:1291)
        at org.jboss.as.cli.impl.ValueTypeCompleter$ValueTypeCallbackHandler.getCandidates(ValueTypeCompleter.java:309)
        at org.jboss.as.cli.impl.ValueTypeCompleter.complete(ValueTypeCompleter.java:83)
        at org.jboss.as.cli.operation.OperationRequestCompleter.complete(OperationRequestCompleter.java:224)
        at org.jboss.as.cli.CommandCompleter.complete(CommandCompleter.java:95)
        at org.jboss.as.cli.impl.Console$Factory$1$1.complete(Console.java:102)
        at org.jboss.aesh.console.Console.complete(Console.java:1151)
        at org.jboss.aesh.console.Console.parseOperation(Console.java:550)
        at org.jboss.aesh.console.Console.read(Console.java:452)
        at org.jboss.aesh.console.Console.read(Console.java:346)
        at org.jboss.as.cli.impl.Console$Factory$1.readLine(Console.java:178)
        at org.jboss.as.cli.impl.CommandContextImpl.interact(CommandContextImpl.java:1200)
        at org.jboss.as.cli.impl.CliLauncher.main(CliLauncher.java:263)
        at org.jboss.as.cli.CommandLineMain.main(CommandLineMain.java:34)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.jboss.modules.Module.run(Module.java:292)
        at org.jboss.modules.Main.main(Main.java:455)