Creating campaign via API call with parameter triggerDate returns error but campaign is created !!!

I am trying to create a campaign via api, i tried to implement triggerDate and triggerMode 'date' but i get an error (i cleared cashe)

the load is the above

           $this->load = array(
            'name' => 'test',
            'description' => 'desc',
            'isPublished' => 1,
            //segment
            'lists' => [
                [
                    'id' =>10,
                    'children' => ['new_44'],
                ]
            ],
            'events' => array(
                array(
                    'id' => 'new_44', // Event ID will be replaced on /new
                    'name' =>'test',
                    'description' => 'test',
                    'type' => 'email.send',
                    'eventType' => 'action',
                    'order' => 1,
                    'properties' => array(
                        'email' =>1,
                        'email_type' => 'transactional',
                    ),
                    'triggerDate' => '2019-01-10 14:00:00',
                    'triggerInterval' => 0,
                    'triggerIntervalUnit' => null,
                    'triggerMode' => 'date',
                    'children' => null,
                    'parent' => 'lists',
                    'decisionPath' => 'no',
                )
            ),
            'forms' => array(),
            'canvasSettings' => array(
                'nodes' => array(
                    array(
                        'id' => 'new_44', // Event ID will be replaced on /new
                        'positionX' => '433',
                        'positionY' => '348',
                    ),
                    array(
                        'id' => 'lists',
                        'positionX' => '629',
                        'positionY' => '65',
                    ),
                ),
                'connections' => array(
                    array(
                        'sourceId' => 'lists',
                        'targetId' => 'new_44', // Event ID will be replaced on /new
                        'anchors' => array(
                            'source' => 'leadsource',
                            'target' => 'top',
                        )
                    ),
                )
            )

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Start by reproducing the campaign creation API call with the supplied triggerDate and triggerMode parameters, recording the error response and the resulting campaign. Trace the campaign API handling for these parameters and verify that a successful creation does not return an error while preserving the requested scheduling values.