Get the analys with php curl of feedback

Why when i try to get the analysis of a feedback there show me this error?

{"exception":"dml_missing_record_exception","errorcode":"invalidrecord","message":"Non \u00e8 possibile trovare il record nella tabella feedback."}

the link for the access this error code is:

https://example.it//webservice/rest/server.php?wstoken=token&wsfunction=mod_feedback_get_analysis&moodlewsrestformat=json&feedbackid=3736&courseid=185&groupid=0