HI there,Below my code was working fine, but suddenly pass an error, when I try to attach a document,Custom API for Case Attachment,@RestResource(urlMapping='/CaseAttachment/*')global with sharing class CaseAttachment{@HttpGet global static List<Attachment> getCaseById() { RestRequest req = RestContext.request; RestResponse res = RestContext.response; String Id = req.requestURI.substring(req.requestURI.lastIndexOf('/')+1); List<Attachment> result = [Select id, Name, OwnerId, BodyLength, LastModifiedById, LastModifiedDate, ContentType, Body, Description, CreatedDate, CreatedById from Attachment where ParentId = :Id]; return result; } @HttpPost global static void doget(String type, String body, String ContentType, String ParentID){ RestRequest req = RestContext.request; RestResponse res = RestContext.response; if(Test.isRunningTest()){ String CaseName=req.requestURI.substring(req.requestURI.lastIndexOf('/')+1); //String doc=EncodingUtil.Base64Encode(req.requestBody); } Attachment a = new Attachment(); a.Name = type; a.Body = Blob.valueOf(body); a.ContentType = ContentType; a.ParentId = ParentID; insert a; }}Below the resultCan someone help with this asap.