Should check if isset($widget_options['settings']) before attempting to use, or initialize $widget_options['settings'] to null and check against that later.
Error goes away after turning on at least one setting under Plugins > Widget Options > Settings > Pages Visibility > Configure Settings
Undefined index: settings in ...\wp-content\plugins\widget-options\includes\widgets\display.php on line 439:
Should check if
isset($widget_options['settings'])
before attempting to use, or initialize $widget_options['settings'] to null and check against that later.Error goes away after turning on at least one setting under Plugins > Widget Options > Settings > Pages Visibility > Configure Settings
WordPress v4.9.10 PHP v5.6