diff --git a/build/controllers/PhpDocController.php b/build/controllers/PhpDocController.php
index eb5b7ea4b0..5e9628250c 100644
--- a/build/controllers/PhpDocController.php
+++ b/build/controllers/PhpDocController.php
@@ -479,9 +479,15 @@ class PhpDocController extends Controller
 
     protected function updateClassPropertyDocs($file, $className, $propertyDoc)
     {
-        $ref = new \ReflectionClass($className);
+        try {
+            $ref = new \ReflectionClass($className);
+        } catch (\Exception $e) {
+            $this->stderr("[ERR] Unable to create ReflectionClass for class '$className': " . $e->getMessage() . "\n", Console::FG_RED);
+            return false;
+        }
         if ($ref->getFileName() != $file) {
             $this->stderr("[ERR] Unable to create ReflectionClass for class: $className loaded class is not from file: $file\n", Console::FG_RED);
+            return false;
         }
 
         if (!$ref->isSubclassOf('yii\base\Object') && $className != 'yii\base\Object') {