···49495050 // The config value should come from route() call which means it's percent encoded
5151 // but it'll be reused as parameter for another route() call so decode it here.
5252- $this->relativeUrlRoot = urldecode($this->config->get('osu_extension/relative_url_root'));
5252+ $relativeUrlRoot = $this->config->get('osu_extension/relative_url_root');
5353+ $this->relativeUrlRoot = $relativeUrlRoot === null ? null : urldecode($relativeUrlRoot);
5354 $fixWikiUrl = $this->config->get('osu_extension/fix_wiki_url');
5455 $generateToc = $this->config->get('osu_extension/generate_toc');
5556 $recordFirstImage = $this->config->get('osu_extension/record_first_image');