social login: Call to a member function authenticate() on null

When using social login, after authenticating with LinkedIn and being redirected back to my domain got this error:

Fatal error: Uncaught Error: Call to a member function authenticate() on null in /var/www/html/wp-content/plugins/super-socializer/super_socializer.php:478 Stack trace: 
#0 /var/www/html/wp-includes/class-wp-hook.php(286): the_champ_connect(Object(WP)) 
#1 /var/www/html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) 
#2 /var/www/html/wp-includes/plugin.php(515): WP_Hook->do_action(Array) 
#3 /var/www/html/wp-includes/class-wp.php(373): do_action_ref_array('parse_request', Array) 
#4 /var/www/html/wp-includes/class-wp.php(713): WP->parse_request('') 
#5 /var/www/html/wp-includes/functions.php(960): WP->main('') 
#6 /var/www/html/wp-blog-header.php(16): wp() 
#7 /var/www/html/index.php(17): require('/var/www/html/w...') 
#8 {main} thrown in /var/www/html/wp-content/plugins/super-socializer/super_socializer.php on line 478

The url is:

https://www.<mydomain>.com/?SuperSocializerAuth=Linkedin&super_socializer_redirect_to=https://www.<mydomain>.com/register/&code=AQT....m7g&state=1527226793-827753

I am using wordpress Version 4.9.6 on Docker (official wordpress image ‘wordpress:4.9-php7.1-apache’)

• This topic was modified 5 years, 11 months ago by oilgarch.