You’ve installed another plugin which uses Facebook SDK (a code library from Facebook), and this library can’t be included more than once. Disable that plugin and WSL will work again.
I have the same issue. I used to have another plugin named “Soclever Facebook Login” then I deleted it but issue persists. So I decided to create a new Facebook App specifically for “WP Social Login” but the issue continues in my website.
@latixns it has nothing to do with Facebook App. It’s totally on WordPress and PHP side, it tries to load (require_once/include_once) the same library (php file) again. Check if any other plugin uses Facebook SDK library. If you have uninstalled that plugin but error still occurs, my guess is there’s some transients cached, opcache/memcached interferrence or smth like this. I’m not sure if it can cause this issue, but worth checking if you are 100% sure there’s no other plugin using the same library.
Thanks Ihor Vorotnov! You were right it was a “facebook albums” plugin which was causing the issue.
np, glad you have it fixed 🙂
@latixns you should mark the topic as resolved. If you don’t mind 😉
I had a same problem. I installed Facebook plugin but it cant run. Any answers???
Tu lanh cu
Catsaigon have you completed the steps included in the “Facebook login plugin”? Check if you have another plugin using the same facebook sdk. My problem was having another plugin named “facebook albums” using the same sdk.
Mình đã cài đặt plugin của Facebook chạy rất oke
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