vBulletin 5 error

Hello,

I receive the following error when trying to use the Facebook OneAll Social Login on my vBulletin 5.6.3 forum.

Call to undefined method vB_Api_User::getUsertitleFromPosts()

My Facebook feed says I have logged in but I simply get a blank page with the above error message when trying to log in.

Thanks in advance for any info/help.

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