Login with facebook is wrong

Hello, My name is Gabriel and I’m having problems completing the access with facebook on my website.
After logging in with facebook and filling in the data, this image appears: https://i.imgur.com/l9bfE6H.png
I followed the developers’ step by step correctly and I’m having trouble solving this problem. Would you help me?

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The page I need help with: [log in to see the link]