"Requested entity was not found. " while working with searchconsole

Question

i used to run the request to get data mobileFriendlyTest from googlesearchconsole, from https://console.cloud.google.com/apis

i did run :

$request = new Request('POST', 'https://searchconsole.googleapis.com/v1/urlTestingTools/mobileFriendlyTest:run?key='.$api_key, $headers, $body);

i thought its a problem related to the validation of the api key, so i created a new one in a new project, but it remains the same problem..

any solution please, this is the error i got :

Client error: POST https://searchconsole.googleapis.com/v1/urlTestingTools/mobileFriendlyTest:run?key=xxxxx%60 resulted in a 404 Not Found` response: { "error": { "code": 404, "message": "Requested entity was not found.", "status": "NOT_FOUND" } }