xcode - Parse Facebook login fails with error code 251 -


i'm trying use parse facebook & twitter login in app problem can't facebook login work.

i'm getting following error message:

    error domain=parse code=251 "the operation couldn’t completed. (parse error 251.)" userinfo=0xa0329c0 {code=251, error=the supplied facebook session token expired or invalid. 

i downloaded parse tutorial "integratingfacebooktutorial" , still same error.

(i added bundle facebook app , updated application id on xcode required.

the same happens in own project when trying use pfloginviewcontroller, same setup + i'm calling [pffacebookutils initializefacebook]; in didfinishlaunchingwithoptions.

i found several reports issue 0 solutions far.

found solution (will happy hear if valid solution)

in facebook app (developer.facebook.com) -> settings -> advanced -> app secret embedded -> set "no" , problem solved!


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