Crashing

Admin panel went blank, could not edit my slider. Then the page with the slider was missing from the slider down.

Deactivated WP RSS Aggregator plugin to get it going again. Not sure which plug-in is “at fault”

Have the following error in the logs (w/WP RSS Aggregator activated):

2019/03/01 18:42:43 [error] 16633#16633: *634198 FastCGI sent in stderr: “PHP message: PHP Fatal error: Uncaught TypeError: Argument 1 passed to Twig_Lexer::__construct() must be an instance of Twig\Environment, instance of Twig_Environment given, called in /var/www/wordpress/wp-content/plugins/slider-by-supsystic/vendor/Twig/Environment.php on line 650 and defined in /var/www/wordpress/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/lib/Twig/Lexer.php:58
Stack trace:
#0 /var/www/wordpress/wp-content/plugins/slider-by-supsystic/vendor/Twig/Environment.php(650): Twig_Lexer->__construct(Object(Twig_Environment))
#1 /var/www/wordpress/wp-content/plugins/slider-by-supsystic/vendor/Twig/Environment.php(750): Twig_Environment->tokenize(Object(Twig_Source))
#2 /var/www/wordpress/wp-content/plugins/slider-by-supsystic/vendor/Twig/Environment.php(447): Twig_Environment->compileSource(Object(Twig_Source))
#3 /var/www/wordpress/wp-content/plugins/slider-by-supsystic/vendor/Twig/Environment.php(362): Twig_Environment->loadTemplate(‘@settings/index…’)
#4 /var/www/wordpress/wp-conte” while reading upstream, client: 24.241.24.14, server: domain.org, request: “GET /wp-admin/admin.php?page=supsystic-slider&module=settings HTTP/1.1”, upstream: “fastcgi://unix:/run/php/php7.0-fpm.sock:”, host: “domain.org”, referrer: “https://domain.org/wp-admin/admin.php?page=supsystic-slider&module=slider”