Error on line X, column X of pubspec.yaml: A dependency may only have one source.

问题描述

flutter create 初始化项目后，紧接着在 pubspec.yaml 文件中添加依赖：

name: my_wechat
description: A new Flutter project.

# 插件引入
dependencies:
  flutter:
    sdk: flutter

   flutter_webview_plugin: "^0.2.1+2"
   date_format: "^1.0.4"

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:

  uses-material-design: true

其中 flutter_webview_plugin、date_format 是我要添加的依赖，这看起来没有任何问题。

但当我 Running 运行编译后不料报错，Error：A dependency may only have one source.

解决方案

由于 没有遵守 yaml 语法，从而导致无法正常编译且报错，请尝试修改缩进格式解决。

如果你想了解 yaml 语法，请访问：https://ansible-tran.readthedocs.io/en/latest/docs/YAMLSyntax.html