Integrating OmniFocus 2 and Evernote on Mac OS

I am an user of Omni Focus 2.11.2.
Whenever I send OF items to Evernote (“services -> send to Evernote”), there is no response on Evernote.

In Evernote work log, the following message will appear :
main-[ENWebArchiverOperation start] | could not load 'omnifocus:///task

I want to know the procedure Integrating OmniFocus and Evernote on Mac OS 10.12.6.