diff --git a/packages/Parallel/WorkerRunner.php b/packages/Parallel/WorkerRunner.php
index 7ddc7778d7a..2b6f5f3ca98 100644
--- a/packages/Parallel/WorkerRunner.php
+++ b/packages/Parallel/WorkerRunner.php
@@ -8,6 +8,7 @@
 use Clue\React\NDJson\Encoder;
 use PHPStan\Analyser\NodeScopeResolver;
 use Rector\Core\Application\FileProcessor\PhpFileProcessor;
+use Rector\Core\Console\Style\RectorConsoleOutputStyle;
 use Rector\Core\Provider\CurrentFileProvider;
 use Rector\Core\StaticReflection\DynamicSourceLocatorDecorator;
 use Rector\Core\ValueObject\Application\File;
@@ -34,6 +35,7 @@ public function __construct(
         private readonly PhpFileProcessor $phpFileProcessor,
         private readonly NodeScopeResolver $nodeScopeResolver,
         private readonly DynamicSourceLocatorDecorator $dynamicSourceLocatorDecorator,
+        private readonly RectorConsoleOutputStyle $rectorConsoleOutputStyle
     ) {
     }
 
@@ -95,10 +97,7 @@ public function run(Encoder $encoder, Decoder $decoder, Configuration $configura
                     );
                 } catch (Throwable $throwable) {
                     ++$systemErrorsCount;
-
-                    $errorMessage = sprintf('System error: "%s"', $throwable->getMessage()) . PHP_EOL;
-                    $errorMessage .= 'Run Rector with "--debug" option and post the report here: https://github.com/rectorphp/rector/issues/new';
-                    $systemErrors[] = new SystemError($errorMessage, $filePath, $throwable->getLine());
+                    $systemErrors = $this->collectSystemErrors($systemErrors, $throwable, $filePath);
                 }
             }
 
@@ -118,4 +117,27 @@ public function run(Encoder $encoder, Decoder $decoder, Configuration $configura
 
         $decoder->on(ReactEvent::ERROR, $handleErrorCallback);
     }
+
+    /**
+     * @param SystemError[] $systemErrors
+     * @return SystemError[]
+     */
+    private function collectSystemErrors(array $systemErrors, Throwable $throwable, string $filePath): array
+    {
+        $errorMessage = sprintf('System error: "%s"', $throwable->getMessage()) . PHP_EOL;
+
+        if ($this->rectorConsoleOutputStyle->isDebug()) {
+            $systemErrors[] = new SystemError(
+                $errorMessage . PHP_EOL . 'Stack trace:' . PHP_EOL . $throwable->getTraceAsString(),
+                $filePath,
+                $throwable->getLine()
+            );
+            return $systemErrors;
+        }
+
+        $errorMessage .= 'Run Rector with "--debug" option and post the report here: https://github.com/rectorphp/rector/issues/new';
+        $systemErrors[] = new SystemError($errorMessage, $filePath, $throwable->getLine());
+
+        return $systemErrors;
+    }
 }