Fatal error: Uncaught Error: Call to undefined function is_le_page() in /home/letting7/public_html/wp-content/plugins/optimizePressExperiments/src/Experiment.php:78 Stack trace: #0 /home/letting7/public_html/wp-includes/class-wp-hook.php(288): OptimizePressStats_Experiment->switchPage(Object(WP_Query)) #1 /home/letting7/public_html/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters('', Array) #2 /home/letting7/public_html/wp-includes/plugin.php(544): WP_Hook->do_action(Array) #3 /home/letting7/public_html/wp-includes/class-wp-query.php(1757): do_action_ref_array('pre_get_posts', Array) #4 /home/letting7/public_html/wp-includes/class-wp-query.php(3413): WP_Query->get_posts() #5 /home/letting7/public_html/wp-includes/class-wp.php(614): WP_Query->query(Array) #6 /home/letting7/public_html/wp-includes/class-wp.php(731): WP->query_posts() #7 /home/letting7/public_html/wp-includes/functions.php(1250): WP->main('') #8 /home/letting7/public_html/wp-blog-header.php(16): wp() #9 /home/letting7/public_html/index.php(17): req in /home/letting7/public_html/wp-content/plugins/optimizePressExperiments/src/Experiment.php on line 78