Fixed of receiving 'function' variable (#2860)

* fixed of receiving function variable

* change CHANGELOG.md

Co-authored-by: Dmitriy Oparin <dmitriyx.oparin@intel.com>

CHANGELOG.md

@@ -39,6 +39,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 -
 
 ### Fixed
+
 - More robust execution of nuclio GPU functions by limiting the GPU memory consumption per worker (<https://github.com/openvinotoolkit/cvat/pull/2714>)
 - Kibana startup initialization (<https://github.com/openvinotoolkit/cvat/pull/2659>)
 - The cursor jumps to the end of the line when renaming a task (<https://github.com/openvinotoolkit/cvat/pull/2669>)
@@ -52,6 +53,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed cuboid perpective change (<https://github.com/openvinotoolkit/cvat/pull/2733>)
 - Annotation page popups (ai tools, drawing) reset state after detecting, tracking, drawing (<https://github.com/openvinotoolkit/cvat/pull/2780>)
 - Polygon editing using trailing point (<https://github.com/openvinotoolkit/cvat/pull/2808>)
+- Fixed of receiving function variable (<https://github.com/openvinotoolkit/cvat/pull/2860>)
 
 ### Security
 

cvat/apps/lambda_manager/views.py

@@ -605,7 +605,7 @@ class RequestViewSet(viewsets.ViewSet):
             self.check_object_permissions(self.request, db_task)
         except (KeyError, ObjectDoesNotExist) as err:
             raise ValidationError(
-                '`{}` lambda function was run '.format(function) +
+                '`{}` lambda function was run '.format(request.data.get('function', 'undefined')) +
                 'with wrong arguments ({})'.format(str(err)),
                 code=status.HTTP_400_BAD_REQUEST)