Fatal error: Uncaught Error: [] operator not supported for strings in /www/htdocs/w006512e/wp-content/plugins/bbpress/includes/forums/functions.php:1800
Stack trace:
#0 /www/htdocs/w006512e/wp-includes/plugin.php(601): bbp_pre_get_posts_normalize_forum_visibility(Object(WP_Query))
#1 /www/htdocs/w006512e/wp-includes/query.php(2488): do_action_ref_array('pre_get_posts', Array)
#2 /www/htdocs/w006512e/wp-includes/query.php(4002): WP_Query->get_posts()
#3 /www/htdocs/w006512e/wp-includes/class-wp.php(610): WP_Query->query(Array)
#4 /www/htdocs/w006512e/wp-includes/class-wp.php(728): WP->query_posts()
#5 /www/htdocs/w006512e/wp-includes/functions.php(952): WP->main('')
#6 /www/htdocs/w006512e/wp-blog-header.php(16): wp()
#7 /www/htdocs/w006512e/index.php(17): require('/www/htdocs/w00...')
#8 {main}
thrown in /www/htdocs/w006512e/wp-content/plugins/bbpress/includes/forums/functions.php on line 1800