Pimcore\Logger::error PHP Method

    public static function error($m, $context = [])
    {
        self::log($m, "error", $context);
    }

 public static function runCrawler()
 {
     $running = Configuration::getCoreSetting('running');
     if ($running === TRUE) {
         return FALSE;
     }
     $indexDir = \LuceneSearch\Plugin::getFrontendSearchIndex();
     if ($indexDir) {
         exec('rm -Rf ' . str_replace('/index/', '/tmpindex', $indexDir));
         \Pimcore\Logger::debug('LuceneSearch: rm -Rf ' . str_replace('/index/', '/tmpindex', $indexDir));
         \Pimcore\Logger::debug('LuceneSearch: Starting crawl');
         try {
             $urls = Configuration::get('frontend.urls');
             $invalidLinkRegexesSystem = Configuration::get('frontend.invalidLinkRegexes');
             $invalidLinkRegexesEditable = Configuration::get('frontend.invalidLinkRegexesEditable');
             if (!empty($invalidLinkRegexesEditable) and !empty($invalidLinkRegexesSystem)) {
                 $invalidLinkRegexes = array_merge($invalidLinkRegexesEditable, array($invalidLinkRegexesSystem));
             } else {
                 if (!empty($invalidLinkRegexesEditable)) {
                     $invalidLinkRegexes = $invalidLinkRegexesEditable;
                 } else {
                     if (!empty($invalidLinkRegexesSystem)) {
                         $invalidLinkRegexes = array($invalidLinkRegexesSystem);
                     } else {
                         $invalidLinkRegexes = array();
                     }
                 }
             }
             self::setCrawlerState('frontend', 'started', TRUE);
             try {
                 foreach ($urls as $seed) {
                     $parser = new Parser();
                     $parser->setDepth(Configuration::get('frontend.crawler.maxLinkDepth'))->setValidLinkRegexes(Configuration::get('frontend.validLinkRegexes'))->setInvalidLinkRegexes($invalidLinkRegexes)->setSearchStartIndicator(Configuration::get('frontend.crawler.contentStartIndicator'))->setSearchEndIndicator(Configuration::get('frontend.crawler.contentEndIndicator'))->setSearchExcludeStartIndicator(Configuration::get('frontend.crawler.contentExcludeStartIndicator'))->setSearchExcludeEndIndicator(Configuration::get('frontend.crawler.contentExcludeEndIndicator'))->setAllowSubdomain(FALSE)->setAllowedSchemes(Configuration::get('frontend.allowedSchemes'))->setDownloadLimit(Configuration::get('frontend.crawler.maxDownloadLimit'))->setSeed($seed);
                     if (Configuration::get('frontend.auth.useAuth') === TRUE) {
                         $parser->setAuth(Configuration::get('frontend.auth.username'), Configuration::get('frontend.auth.password'));
                     }
                     $parser->startParser();
                     $parser->optimizeIndex();
                 }
             } catch (\Exception $e) {
             }
             self::setCrawlerState('frontend', 'finished', FALSE);
             //only remove index, if tmp exists!
             $tmpIndex = str_replace('/index', '/tmpindex', $indexDir);
             if (is_dir($tmpIndex)) {
                 exec('rm -Rf ' . $indexDir);
                 \Pimcore\Logger::debug('LuceneSearch: rm -Rf ' . $indexDir);
                 exec('cp -R ' . substr($tmpIndex, 0, -1) . ' ' . substr($indexDir, 0, -1));
                 \Pimcore\Logger::debug('LuceneSearch: cp -R ' . substr($tmpIndex, 0, -1) . ' ' . substr($indexDir, 0, -1));
                 \Pimcore\Logger::debug('LuceneSearch: replaced old index');
                 \Pimcore\Logger::info('LuceneSearch: Finished crawl');
             } else {
                 \Pimcore\Logger::error('LuceneSearch: skipped index replacing. no tmp index found.');
             }
         } catch (\Exception $e) {
             \Pimcore\Logger::error($e);
             throw $e;
         }
     }
 }