Laravel Socialite Facebook error: “POST https://graph.facebook.com/oauth/access_token resulted in a `400 Bad Request` ” [duplicate]

Answer 1

I had this message on my local machine after getting secret key value from .env file

ClientException in RequestException.php line 111:
enter code here Client error: `POST 
https://graph.facebook.com/v2.8/oauth/access_token` resulted in a `400 
Bad Request` response:
{"error":{"message":"Error validating client 
secret.","type":"OAuthException","code":1,"fbtrace_id":"ID"}}

As expected problem was with secret key, I pasted it wrong, so after double check and right copy/past from fb everything worked.

Hope this info will help somebody.