upd

workflow/services/WorkflowService.php

@@ -72,7 +72,9 @@ class WorkflowService
             ->addAuthenticator(new HttpBearer($token))
             ->post(ApiEndpoint::WORKFLOW_API->getEndPoint('/', 'wf-engine-get-allowed-actions'), [
                 'id' => $runtimeId,
-                'params' => $params ?? [],
+                'data' => [
+                    'params' => $params ?? []
+                ],
             ]);
 
         $result = json_decode($result->getContents(), true);