Channel Entries API Error: Undefined property: EE::$stats

Question

This error appears during execution of the Channels Entry API in an API extension:

A PHP Error was encountered Severity: Notice Message: Undefined property: EE::$stats Filename: api/Api_channel_entries.php

The API library is loaded successfully:

 ee()->load->library('api');
 ee()->api->instantiate('channel_entries');
 ee()->api->instantiate('channel_fields');

and I am making sure the API user has permission (SuperAdmin).

The data array looks like this:

$data = array(
'title'         => $tTourTitle, 
'field_id_127'  => $tTourDuration, 
'field_id_136'  => $pCountry, 
'field_id_137'  => "$tTourCity", 
'field_id_141'  => "$tIncludes",  
'field_id_142'  => "$tExcludes", 
'field_id_143'  => "$tNotes", 
'field_id_144'  => "$tDescription", 
'field_id_145'  => "$pTour->Opt", 
'field_id_149'  => $tTourPreferred 
);

and I am executing the call according to EE 2.11.1 documentation:

ee()->api_channel_fields->setup_entry_settings($this->aEESettings['experiences_channel_id'], $data);

if($pTourId !== ''){
  $updateResult = ee()->api_channel_entries->save_entry($data, $this->aEESettings['experiences_channel_id'], $pTourId);
} else {
  $updateResult = ee()->api_channel_entries->save_entry($data, $this->aEESettings['experiences_channel_id']);
}

Why would I get this stats object error? Do I need to load any other models/apis to get this working?

Not sure if this matters, but we are using the Structure AddOn.

Thanks in advance for your input.

Answer 1

In the meantime I have figured out this problem. When using the API library, it is required to also load the stats library. Like so:

 ee()->load->library('api');
 ee()->load->library('stats');
 ee()->api->instantiate('channel_entries');
 ee()->api->instantiate('channel_fields');