Does anybody know what does "Undefined index: HTTP_X_AUTH_PORT " mean?

Does anybody know what does "Undefined index: HTTP_X_AUTH_PORT " mean?

Posted at Nginx Forum:

On Fri, Mar 13, 2015 at 8:01 PM, dominus.ceo [email protected]
wrote:

Does anybody know what does "Undefined index: HTTP_X_AUTH_PORT " mean?

It means your php application is incorrectly written or you missed
some nginx configuration for that specific application. (it’s php
error message)

Thanks

Posted at Nginx Forum: