*lastName is mandatory, but you can try without!


onsubmit="event.preventDefault(); let th=this, xmlhReq=new XMLHttpRequest; xmlhReq.open('POST','/wp-json/ssws-wp-sf/v2/s'), xmlhReq.onload=function(){th.innerHTML=JSON.parse(xmlhReq.response)}, xmlhReq.send(new FormData(th));"