diff --git a/src/TracyBlueScreenDebugger.php b/src/TracyBlueScreenDebugger.php
new file mode 100644
index 0000000..05abcbb
--- /dev/null
+++ b/src/TracyBlueScreenDebugger.php
@@ -0,0 +1,148 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Baraja\Doctrine;
+
+
+use Baraja\Doctrine\DBAL\Utils\QueryUtils;
+use Doctrine\DBAL\Exception\DriverException;
+use Doctrine\ORM\Mapping\MappingException;
+use Doctrine\ORM\ORMException;
+use Doctrine\ORM\Query\QueryException;
+use Tracy\BlueScreen;
+use Tracy\Dumper;
+
+final class TracyBlueScreenDebugger
+{
+	/** @throws \Error */
+	public function __construct()
+	{
+		throw new \Error('Class ' . get_class($this) . ' is static and cannot be instantiated.');
+	}
+
+
+	/**
+	 * @param \Throwable|null $e
+	 * @return string[]|null
+	 */
+	public static function render(?\Throwable $e): ?array
+	{
+		if ($e instanceof DriverException) {
+			return self::renderDriver($e);
+		}
+
+		if ($e === null || !$e instanceof ORMException) {
+			return null;
+		}
+
+		if ($e instanceof QueryException) {
+			return self::renderQuery($e);
+		}
+
+		if ($e instanceof MappingException) {
+			return self::renderMapping($e);
+		}
+
+		return self::renderCommon($e);
+	}
+
+
+	/**
+	 * @param ORMException $e
+	 * @return string[]
+	 */
+	private static function renderCommon(ORMException $e): array
+	{
+		return [
+			'tab' => 'ORM error',
+			'panel' => '<p>' . htmlspecialchars($e->getMessage()) . '</p>',
+		];
+	}
+
+
+	/**
+	 * @param DriverException $e
+	 * @return string[]
+	 */
+	private static function renderDriver(DriverException $e): array
+	{
+		if (preg_match('/while executing \'(.+)\' with params (.+):(?:\n\s)+(.+)/', $e->getMessage(), $parser)) {
+			return [
+				'tab' => 'Driver error | ' . $parser[3],
+				'panel' => '<pre class="code"><div>' . QueryUtils::highlight($parser[1]) . '</div></pre>'
+					. '<p>With params:</p>' . Dumper::toHtml(json_decode($parser[2])),
+			];
+		}
+
+		if (preg_match('/while executing \'(.+)\'/', $e->getMessage(), $parser)) {
+			return [
+				'tab' => 'Driver error',
+				'panel' => '<pre class="code"><div>' . QueryUtils::highlight($parser[1]) . '</div></pre>',
+			];
+		}
+
+		return [
+			'tab' => 'Driver error',
+			'panel' => '<p>' . htmlspecialchars($e->getMessage()) . '</p>',
+		];
+	}
+
+
+	/**
+	 * @param QueryException $e
+	 * @return string[]
+	 */
+	private static function renderQuery(QueryException $e): array
+	{
+		return [
+			'tab' => 'Query error',
+			'panel' => '<p>' . htmlspecialchars($e->getMessage()) . '</p>',
+		];
+	}
+
+
+	/**
+	 * @param MappingException $e
+	 * @return string[]
+	 */
+	private static function renderMapping(MappingException $e): array
+	{
+		if (preg_match('/Class "([^"]+)"/', $e->getMessage(), $parser)) {
+			if (class_exists($className = $parser[1]) === true) {
+				$fileName = null;
+				$fileContent = null;
+				$docComment = '';
+				$startLine = 1;
+				try {
+					$fileName = ($ref = new \ReflectionClass($className))->getFileName();
+					$fileContent = \is_file($fileName) ? file_get_contents($fileName) : null;
+					$startLine = $ref->getStartLine();
+					$docComment = trim((string) $ref->getDocComment());
+				} catch (\ReflectionException $e) {
+				}
+
+				if ($fileName !== null && $fileContent !== null) {
+					return [
+						'tab' => 'Mapping error',
+						'panel' => '<p>Class <b>' . htmlspecialchars($className) . '</b>, path: <b>' . htmlspecialchars($fileName) . '</b></p>'
+							. BlueScreen::highlightPhp(htmlspecialchars($fileContent, ENT_IGNORE, 'UTF-8'), $startLine)
+							. '<p>Doc comment:</p>'
+							. ($docComment === '' ? '<i>Doc comment is empty.</i>' : '<pre>' . htmlspecialchars($docComment) . '</pre>'),
+					];
+				}
+			}
+
+			return [
+				'tab' => 'Mapping error',
+				'panel' => '<p>Class "' . htmlspecialchars($className) . '" does not exist!</p>'
+					. '<p>' . htmlspecialchars($e->getMessage()) . '</p>',
+			];
+		}
+
+		return [
+			'tab' => 'Mapping error',
+			'panel' => '<p>' . htmlspecialchars($e->getMessage()) . '</p>',
+		];
+	}
+}