Laravel FacebookProvider错误。 未定义的变量：access_token [duplicate]

Question

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• facebook graph api not work from 2.2 to 2.3 1 answer

I have strange problem with facebook provider in my project (Laravel 5.2);

Undefined variable: access_token vendor/laravel/socialite/src/Two/FacebookProvider.php 80

It's strange because it worked long time and now i have error. Nothing was changed in my code.

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Answer 1

It may be caused by the depreciation of v2.2 Graph API.

Checkout the changelog at facebook.

In v2.3 Graph API, Oauth Access Token calls now return a valid JSON message insted of an encoded URL.

The new format of this response is {"access_token": {TOKEN}, "token_type":{TYPE}, "expires_in":{TIME}}.