无法从Feathers服务中引发Apollo服务器错误

Question

我一直试图从一个羽毛服务查找调用的承诺中引发apollo服务器错误。但是错误总是出现在

process.on('unhandledRejection', (reason, p) => logger.error('Unhandled Rejection at: Promise ', p, reason) );

但是如果我直接从我的突变中扔掉它。转到graphql ui

 import * as commonModule from './../../../commonModule/index.js';
            export default function(Address,USER,mutationName){
              const usersResolvers = {
                Mutation:{
                  `registerUser`: (root, args, context) => {
                    console.log()
                    let errors= [];
                    errors = errors.concat(commonModule.validator.numberValidator(args.cardNumber));
                    errors = errors.concat(commonModule.validator.stringValidator(args.name, 48, 'name'));
                    errors = errors.concat(commonModule.validator.checkKeyExists(args.loginIdentifiers,'mobile'));
                    errors = errors.concat(commonModule.validator.loginIdentifierValidator(args.loginIdentifiers));

    //THIS ERROR IS THROWN PROPERLY
                if(errors.length) throw new commonModule.GenericError('Validation Error',errors);
                //Check if user already exists with the mobile number
                 USER.find({query:{"MOBILE_NUMBER":args.loginIdentifiers.mobile,'$limit': 1}}).then((res) => {
//BUT THIS ERROR JUST LOGS A UNHANDLED REJECTION
                  if(res.length) throw new commonModule.GenericError('User Already Exists',[{key:'User',message:'user already exists'}]);
                },err => {
                  console.log(err);
                })
              }
            }

在我正在执行的通用错误类中

import { ApolloError } from 'apollo-server-express';

class GenericError extends ApolloError {
  constructor(message,errors) {
    super(message);
    this.params = errors.reduce((result, error) => {
      if (Object.prototype.hasOwnProperty.call(result, error.key)) {
        result[error.key].push(error.message);
      } else {
        result[error.key] = [error.message];
      }
      return result;
    }, {});
  }
}

export default GenericError;

我只想从我的服务器抛出apollo服务器错误。我该怎么办？