如果我尝试为我的dart应用程序提供服务，则会出现以下错误：

Serving `web` on http://localhost:80 [INFO]
    ------------------------------------------------------------------------ [INFO] Starting Build [INFO] Updating asset graph completed, took 15ms [WARNING] build_web_compilers|entrypoint on web/main.dart: Unable to read sqljocky|lib/sqljocky.ddc.js, check your console or the `.dart_tool/build/generated/sqljocky/lib/sqljocky.ddc.js.errors` log file. [INFO] Running build completed, took 22.2s [INFO] Caching finalized dependency graph completed, took 622ms [SEVERE] build_web_compilers|ddc on package:sqljocky/sqljocky.module: Error compiling dartdevc module:sqljocky|lib/sqljocky.ddc.js

    [error] Undefined class 'SHA1'. (package:sqljocky/src/auth/auth_handler.dart, line 24, col 24) [error] Undefined class 'SHA1'. (package:sqljocky/src/auth/auth_handler.dart, line 28, col 20) [error] Undefined class 'SHA1'. (package:sqljocky/src/auth/auth_handler.dart, line 32, col 20) [error] Invalid override. The type of 'ConnectionPool._removeConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._removeConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/connection_pool.dart, line 85, col 3) [error] Invalid override. The type of 'ConnectionPool._releaseConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._releaseConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/connection_pool.dart, line 89, col 3) [error] Invalid override. The type of 'ConnectionPool._reuseConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._reuseConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/connection_pool.dart, line 105, col 3) [error] Invalid override. The type of '_QuitHandler.processResponse' ('(Buffer) → dynamic') isn't a subtype of '_Handler.processResponse' ('(Buffer) → _HandlerResponse'). (package:sqljocky/src/handlers/quit_handler.dart, line 14, col 3) [error] Invalid override. The type of 'Query._releaseConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._releaseConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/query.dart, line 170, col 3) [error] Invalid override. The type of 'Query._reuseConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._reuseConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/query.dart, line 179, col 3) [error] Invalid override. The type of 'Query._removeConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._removeConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/query.dart, line 185, col 3) [error] Invalid override. The type of 'Transaction._releaseConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._releaseConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/transaction.dart, line 85, col 3) [error] Invalid override. The type of 'Transaction._reuseConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._reuseConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/transaction.dart, line 89, col 3) [error] Invalid override. The type of 'Transaction._removeConnection' ('(_Connection) → dynamic') isn't a subtype of '_ConnectionHelpers._removeConnection' ('(dynamic) → dynamic'). (package:sqljocky/src/transaction.dart, line 93, col 3)

    Please fix all errors before compiling (warnings are okay). }

[SEVERE] Failed after 22.8s

我没有使用sqljocky的任何函数，这些是我的导入：

import 'dart:async';
import 'dart:convert';

import 'package:angular/angular.dart';
import 'package:angular_components/angular_components.dart';
import 'package:sqljocky/sqljocky.dart';
import 'package:sqljocky/utils.dart';
import 'package:options_file/options_file.dart';

我的出版物：

name: MyDartPage
description: A web app that uses AngularDart Components

# version: 1.0.0

# homepage: https://www.example.com

# author: Mattia <email@example.com>

environment:
  sdk: '>=2.0.0-dev.66.0 <2.0.0'

dependencies:
  angular: any
  angular_components: any
  sqljocky: any

dev_dependencies:
  angular_test: any
  build_runner: any
  build_test: any
  build_web_compilers: any
  test: any

在它看起来像这样之前：

name: MyDartPage
description: A web app that uses AngularDart Components

# version: 1.0.0

# homepage: https://www.example.com

# author: Mattia <email@example.com>

environment:
  sdk: '>=2.0.0-dev.66.0 <2.0.0'

dependencies:
  angular: ^5.0.0-beta
  angular_components: ^0.9.0-beta
  sqljocky: ^0.14.0

dev_dependencies:
  angular_test: ^2.0.0-beta
  build_runner: ^0.9.0
  build_test: ^0.10.2
  build_web_compilers: ^0.4.0
  test: ^1.0.0

但由于这个错误我不得不改变它：
因为每个版本的生成运行程序都依赖于crypto>=0.9.2<3.0.0，crypto>=0.9.2<2.0.1依赖于convert^1.0.0，所以每个版本的生成运行程序都需要convert^1.0.0或crypto^2.0.1。由于build\u runner>=0.6.1依赖于convert^2.0.1，sqljocky>=0.7.0依赖于crypto^0.9.0，build\u runner>=0.6.1与sqljocky>=0.7.0不兼容。因此，因为mydartpage同时依赖于sqljocky^0.14.0和build\u runner^0.9.0，所以版本求解失败。
我的飞镖版本是：
dart虚拟机版本：2.0.0-dev.67.0（2018年7月3日星期二18:17:07+0200），在“windows\u x64”上
如何修复这两个错误？