string(284)
"oauth_problem=oauth_consumer_key+is+a+required+field%2C+oauth_signature+is+a+required+field%2C+oauth_signature_method+is+a+required+field%2C+oauth_nonce+is+a+required+field%2C+oauth_timestamp+is+a+required+field%2C+oauth_token+is+a+required+field%2C+oauth_verifier+is+a+required+field" string(292) "Authorization: OAuth oauth_consumer_key=<key here>,oauth_nonce=<nonce here>,oauth_signature_method=HMAC-SHA1,oauth_timestamp=1509132854,oauth_version=1.0,oauth_verifier=<code here>,oauth_signature=<signiture here>%3D"
(Yes, those <> parts are filled in.)
@Silarn We cannot reproduce this issue as described. Please provide the detailed steps we must follow to reproduce this issue. In addition, identify the web server you are running, the versions of PHP and MySQL, and any other information needed to reproduce your issue.
@Silarn, we are closing this issue due to inactivity. If you'd like to update it, please reopen the issue.
I also face this issue on Magento store.
Magento v-2.2.0, MySQL v-5.7.x
Steps to reproduce:
string(284) "oauth_problem=oauth_consumer_key+is+a+required+field%2C+oauth_signature+is+a+required+field%2C+oauth_signature_method+is+a+required+field%2C+oauth_nonce+is+a+required+field%2C+oauth_timestamp+is+a+required+field%2C+oauth_token+is+a+required+field%2C+oauth_verifier+is+a+required+field" string(296) "Authorization: OAuth oauth_consumer_key=
,oauth_nonce= ,oauth_signature_method=HMAC-SHA1,oauth_timestamp=1512029004,oauth_version=1.0,oauth_verifier=yxojy2dm1gby6glbg1e5t3ck1viccqky,oauth_signature=7MV5veE%2FA25e%2FHKu6qy3x5%2Bg3Pw%3D"
Note- While on my second installation of Magento 2.2.1, I didn't get any error message. But when click on the Launch Store following window is open on clicking Connect Magento to Facebook

When I follow the troubleshooting section http://docs.magento.com/m2/ce/user_guide/marketing/social-connect-to-facebook.html to overcome this issue the Message display is "The customer key you've entered cannot be found, please check code.", while I entered the correct key.
Hello,
Same issue here on Magento 2.2.2, has this been fixed ?
I'm having this issue on a production site upgraded from 2.1.9 and a fresh install with 2.2.2.
Hello ,
I also face this issue on Magento 2.2.2 ?.
Any Update?
Thanks,
I am seeing this issue on an install of magento 2.2.5, I think it is related to server settings, but do not know where to look.
We have the same. I've tried contacting the Shopial support, but they couldn't find the issue too. On 2.2.5 too.
At anyone here: since this is not getting resolved (probably anytime soon) and my client does want to use it; are there any alternatives you guys can recommend?
Magento Social needs PHP-FPM (FastCGI Process Manager) to be active. Switch PHP-FPM on and you'll be able to Authenticate it.
we have PHP-FPM on and it still will not authenticate
Has anybody found a fix for this yet, I am receiving the exact same issue as @Silarn, as seen in this video posted from another user https://www.youtube.com/watch?v=4M957wZLbpM&feature=youtu.be
I have attempted to ls to change non secure urls to just http as recommended in another post but not luck.
Most helpful comment
Hello,
Same issue here on Magento 2.2.2, has this been fixed ?
I'm having this issue on a production site upgraded from 2.1.9 and a fresh install with 2.2.2.