Change to empty string.
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@ -24,7 +24,7 @@ class RandomImage extends Extension {
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public function onPageRequest(PageRequestEvent $event) {
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global $config, $database, $page, $user;
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if($event->page_matches("random_image")) {
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var $action;
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$action = '';
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if($event->count_args() == 1) {
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$action = $event->get_arg(0);
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$search_terms = array();
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