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Hello, Blesta has its own mechanism for displaying errors. It is part of minPHP framework and the relevant files are /lib/stdlib.php and /lib/unknown_exception.php. However, there are PHP libraries that can help you further to ease development in PHP. I like https://packagist.org/packages/tracy/tracy (see an example here: http://examples.nette.org/ndebug/nette-exception.html) Advantages Tracy has a production mode (useful for production version of Blesta when you want to log exceptions and other errors to files) and a develoment mode (useful for plugin developers, maybe even Blesta developers). Development mode allows you to see stack trace, parameters and much more (see http://examples.nette.org/ndebug/nette-exception.html) You can catch all unhandled exceptions. You can event catch NOTICE errors (I believe that everybody should do that.) If an error occurs you have a log file to examine. How to make it work in Blesta 1) Composer settings (composer.json) { "config": { "vendor-dir": "vendors" }, "require": { "tracy/tracy": "dev-master" } } 2) Create folder /log (in Blesta folder) 3) Update /index.php <?php /* SVN FILE: $Id: index.php 52 2010-10-01 20:50:08Z cody $ */ /** * This file transfers control over to the dispatcher which will invoke the * appropriate controller. We also handle any exceptions that were not handled * elsewhere in the application, so we can end gracefully. * * @package minPHP * @version $Revision: 52 $ * @modifiedby $LastChangedBy: cody $ * @lastmodified $Date: 2010-10-01 13:50:08 -0700 (Fri, 01 Oct 2010) $ */ $start = microtime(true); include __DIR__ . '/vendors/autoload.php'; include __DIR__ . '/vendors/Logger/Logger.php'; // my logging class containing \BlestaLogger (it has nothing to do with Tracy) \BlestaLogger::create(); \BlestaLogger::addDebug("==== REQUEST START ===="); //try { include(dirname(__FILE__) . "/lib/init.php"); // Start Tracy // Note: Error handlers are registered in lib/init.php. Tracy does the same therefore // Tracy needs to be initalized after init.php to overwrite previous behaviour) $serverName = isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : ""; $productionMode = php_sapi_name() === 'cli' || stripos($serverName, '.local') === false; $logDir = __DIR__ . '/log'; \Tracy\Debugger::$strictMode = true; \Tracy\Debugger::$scream = true; \Tracy\Debugger::$onFatalError = "\UnknownException::setFatalErrorHandler"; \Tracy\Debugger::enable($productionMode, $logDir); // Dispatch the Web request if (!empty($_SERVER['REQUEST_URI'])) Dispatcher::dispatch($_SERVER['REQUEST_URI']); // Dispatch the CLI request else Dispatcher::dispatchCli($argv); //} /*catch (Exception $e) { try { // Attempt to raise any error, gracefully Dispatcher::raiseError($e); } catch (Exception $e) { if (Configure::get("System.debug")) echo $e->getMessage() . " on line <strong>" . $e->getLine() . "</strong> in <strong>" . $e->getFile() . "</strong>\n" . "<br />Printing Stack Trace:<br />" . nl2br($e->getTraceAsString()); else echo $e->getMessage(); } }*/ \BlestaLogger::addDebug("==== REQUEST END ===="); $end = microtime(true); // Display rendering time if benchmarking is enabled if (Configure::get("System.benchmark")) echo "execution time: " . ($end-$start) . " seconds"; ?> Feature request If you like Tracy (please note that I'm not affiliated with the library in any way) maybe you can integrate it into Blesta. Have a nice day!