System Metrics Template Generation Failed Java Lang Errors

Hello Experts,

I am facing errors during the 6th step of Managed configuration.

On running the Generate System- Level Metrics executable, the execution fails with the error mentioned below.

"System -metrics template generation failed (cause :unexpected error occurs in task execution. Detail :java.lang.NullPointerException: while trying to

invoke method java.io.StringReader.close() of a null object loaded  from local variable 'strReader') ,state:4)

Error screenshot has been attached.

Please help me with your valuable inputs.

Thanks,

Tania