If you try to make Login here via Facebook:
It will return error. How to handle this?
It looks like you either don't have a Facebook App ID or your App is not configured as a website app.
Go to your Facebook Developer page and click Website and enter the site url.
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If you have a question about Q2A, please ask here, in English.
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April 20, 2021: Q2A 1.8.6 released!