Facebook share error: Object at URL of type 'website' is invalid because a required property 'og:title' of type 'string' was not provided - facebook

Question

✋🏽
When I paste the URL of my blog in Facebook debugger, its not picking the title and also the image. In view source of my page, the og:title and also og:image are getting rendered but facebook scraper is not reading any.
Object at URL 'http://blog.la-pigiste.com/2017/09/20/diy-faire-son-terrazzo-granito-do-it-yourself-inspiration-tendance-tutoriel/' of type 'website' is invalid because a required property 'og:title' of type 'string' was not provided.
Facebook debugger also says "{
"error": {
"message": "An access token is required to request this resource.",
"type": "OAuthException",
"code": 104,
"fbtrace_id": "BMdGG7oTu6k"
}
}"
but i don't no what does it means .... 🤔
any help is greatly appreciated 🙏🏻

Answer 1

When trying to fetch new scrape information for your URL through the Open Graph Debugger you get the error:
Curl Error : OPERATION_TIMEOUTED Operation timed out after 10000 milliseconds with 0 bytes received
In other words, your web server didn't reply in 10 seconds and the crawler timed out.
It looks like you configured your web server to behave differently when the request is coming from the Facebook Crawler.
You can verify this using curl.
Fetching your URL with curl's default User Agent works fine:
$ curl -v 'http://blog.la-pigiste.com/2017/09/20/diy-faire-son-terrazzo-granito-do-it-yourself-inspiration-tendance-tutoriel/' > /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Trying 149.56.140.68...
* TCP_NODELAY set
* Connected to blog.la-pigiste.com (149.56.140.68) port 80 (#0)
> GET /2017/09/20/diy-faire-son-terrazzo-granito-do-it-yourself-inspiration-tendance-tutoriel/ HTTP/1.1
> Host: blog.la-pigiste.com
> User-Agent: curl/7.54.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Server: nginx
< Date: Wed, 20 Sep 2017 10:34:37 GMT
< Content-Type: text/html; charset=UTF-8
< Content-Length: 117446
< Connection: keep-alive
< Vary: Accept-Encoding
< Last-Modified: Wed, 20 Sep 2017 07:25:20 GMT
< Accept-Ranges: bytes
< Vary: Accept-Encoding
< X-Powered-By: PleskLin
< Cache-Control: max-age=0, no-cache, no-store, must-revalidate
< Pragma: no-cache
< Expires: Mon, 29 Oct 1923 20:30:00 GMT
<
{ [956 bytes data]
100 114k 100 114k 0 0 159k 0 --:--:-- --:--:-- --:--:-- 159k
* Connection #0 to host blog.la-pigiste.com left intact
Anyway, when the Facebook crawler User Agent is used (facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)), the web server replies differently and only after about 14 seconds:
$ curl -v -A "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)" 'http://blog.la-pigiste.com/2017/09/20/diy-faire-son-terrazzo-granito-do-it-yourself-inspiration-tendance-tutoriel/' > /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Trying 149.56.140.68...
* TCP_NODELAY set
* Connected to blog.la-pigiste.com (149.56.140.68) port 80 (#0)
> GET /2017/09/20/diy-faire-son-terrazzo-granito-do-it-yourself-inspiration-tendance-tutoriel/ HTTP/1.1
> Host: blog.la-pigiste.com
> User-Agent: facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)
> Accept: */*
>
0 0 0 0 0 0 0 0 --:--:-- 0:00:14 --:--:-- 0< HTTP/1.1 200 OK
< Server: nginx
< Date: Wed, 20 Sep 2017 10:37:15 GMT
< Content-Type: text/html; charset=UTF-8
< Transfer-Encoding: chunked
< Connection: keep-alive
< Vary: Accept-Encoding
< X-Powered-By: PHP/5.6.30
< X-Pingback: http://blog.la-pigiste.com/xmlrpc.php
< Link: <http://blog.la-pigiste.com/wp-json/>; rel="https://api.w.org/", <...>; rel=shortlink
< Set-Cookie: wfvt_983661238=59c244cfe4c12; expires=Wed, 20-Sep-2017 11:07:03 GMT; Max-Age=1800; path=/; httponly
< Vary: Accept-Encoding
< X-Powered-By: PleskLin
<
{ [838 bytes data]
100 124k 0 124k 0 0 8507 0 --:--:-- 0:00:15 --:--:-- 36126
* Connection #0 to host blog.la-pigiste.com left intact
Ensure that your web server replies in time and with the correct HTML and the crawler will be able to fetch your OG tags.