Error - ILM Store Configuration

I am facing issue during ILM store configuration. I am trying to use file system as ILM store and followed all the steps as mentioned in the blog.

But facing below issues while running report RILM_STOR_TEST_AT:

--> 003)MKCOL /sap 405 Method not allowed

--> 008)PUT res_0.xml 500 Internal server error

Also, below error while running report RILM_STOR_TEST_HC_SERVER:

--> Operating system command 'ILM_STOR_DIR' is missing

--> Operating system command 'ILM_STOR_DIR_FILES' is missing

--> Operating system command 'ILM_STOR_MKDIR' is missing

Necessary customization done in origin for ZILM_STOR_DIR command as suggested in blog but even then these errors are coming.

Please provide your suggestions and help to resolve these issues.

Thanks.