Vanilla Forums Facebook Authentication Error: UniqueID is required

Question

Recently my instance of Vanilla Forums stoped authenticating users via Facebook. Instead, the error message "UniqueID is required" is shown in the authentication page.

Answer 1

After some research I found this blog post, this github issue and this pull request.

For now I fixed the function getAccessToken() replacing this:

    if (strpos(val('content_type', $Info, ''), '/javascript') !== false) {
        $Tokens = json_decode($Contents, true);
    } else {
        parse_str($Contents, $Tokens);
    }

with this:

    if (strpos(val('content_type', $Info, ''), '/javascript') !== false) {
        $Tokens = json_decode($Contents, true);
    } else if (strpos(val('content_type', $Info, ''), '/json') !== false) {
        $Tokens = json_decode($Contents, true);
    } else {
        parse_str($Contents, $Tokens);
    }

Since the Pull Request was merged a few days ago, the next release should fix this.