Error creating bean with name 'statelessInvalidateTokenFilter'

[bilalsha]

I have done exactly the same but it is giving this exception.

Grails version 2.4.4
jdk1.7.0_79

Configuring Spring Security Stateless ...
... finished configuring Spring Security Stateless
| Error 2017-02-24 12:24:36,402 [localhost-startStop-1] ERROR context.GrailsContextLoaderListener  - Error initializing the application: Error creating bean with name 'statelessInvalidateTokenFilter': Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'groovy.util.ConfigObject' to required type 'java.lang.String' for property 'endpointUrl'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [groovy.util.ConfigObject] to required type [java.lang.String] for property 'endpointUrl': no matching editors or conversion strategy found
Message: Error creating bean with name 'statelessInvalidateTokenFilter': Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'groovy.util.ConfigObject' to required type 'java.lang.String' for property 'endpointUrl'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [groovy.util.ConfigObject] to required type [java.lang.String] for property 'endpointUrl': no matching editors or conversion strategy found
    Line | Method
->>  262 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Caused by ConversionNotSupportedException: Failed to convert property value of type 'groovy.util.ConfigObject' to required type 'java.lang.String' for property 'endpointUrl'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [groovy.util.ConfigObject] to required type [java.lang.String] for property 'endpointUrl': no matching editors or conversion strategy found
->>  262 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Caused by IllegalStateException: Cannot convert value of type [groovy.util.ConfigObject] to required type [java.lang.String] for property 'endpointUrl': no matching editors or conversion strategy found
->>  262 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Error |
Forked Grails VM exited with error
|Server running. Browse to http://localhost:8080/security244

I have attached the sample project please take a look.
security244.zip