APM external logon pages - getting error 405 - HTTP verb used to access this page is not allowed

Created external logon page and named file to index.html. Created a portal APM policy added external logon page as per document and based on one example from devecentral: https://devcentral.f5.com/questions/how-to-use-apm-external-logon-pages

 

When tried https://test.sierracollege.edu then I am getting a

 

"Server Error"

 

405 - HTTP verb used to access this page is not allowed.

 

The page you are looking for cannot be displayed because an invalid method (HTTP verb) was used to attempt access.

 

Can any one correct me or guide me in right direction.

 

Thanks In advance. Saty

 

 

 

 

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