Hello,
I got an error when I give the signer as participants. Code and error screenshots are given below:
This is code:
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.helloworks.com/v3/workflow_instances/preview",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 60,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "document_delivery=true&workflow_id=".$value->workflow_guid."&participants=signer",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer ".$token."",
"accept: application/json",
"content-type: application/x-www-form-urlencoded"
],
]);
and error screenshot:

Please help me to solve these errors.