Fatal Error on customvalue get api
Replicated on dmaster http://dmaster.demo.civicrm.org/civicrm/api#explorer
CustomValue Action =
Fields to return =>
entity_id = <any contact id>
$result = civicrm_api3('CustomValue', 'get', [ 'sequential' => 1, 'return' => "custom_1", 'entity_id' => 202, ]];
"is_error": 1, "error_message": "A fatal error was triggered: is not of type String"
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