命令颤振运行-发布，发布问题，Gradle任务的组装发布失败，退出代码为1

Question

在我的应用程序中，当我以调试模式运行应用程序时，一切正常。但是当我使用flutter run --release运行应用时，会出现此错误，

Gradle task assembleRelease failed with exit code 1

从控制台获取完整日志，

Note: C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\firebase_admob-0.9.0+7\android\src\main\java\io\flutter\plugins\firebaseadmob\AdRequestBuilderFactory.java uses or overrides a deprecated API.

Note: Some input files use or override a deprecated API.
Note: C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\flutter_webview_plugin-0.3.8\android\src\main\java\com\flutter_webview_plugin\WebviewManager.java uses unchecked or unsafe operations.

C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\shared_preferences-0.5.4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:137: warning: [unchecked] unchecked
 cast
      return (List<String>) stream.readObject();
                                             ^
  required: List<String>
  found:    Object
C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\shared_preferences-0.5.4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:182: warning: [unchecked] unchecked
 method invocation: constructor <init> in class ArrayList is applied to given types
          List<String> listValue = new ArrayList<>((Set) value);
                                   ^
  required: Collection<? extends E>
  found: Set
  where E is a type-variable:
    E extends Object declared in class ArrayList

C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\shared_preferences-0.5.4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:182: warning: [unchecked] unchecked
 conversion
          List<String> listValue = new ArrayList<>((Set) value);
                                                   ^
  required: Collection<? extends E>
  found:    Set
  where E is a type-variable:
    E extends Object declared in class ArrayList
C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\shared_preferences-0.5.4\android\src\main\java\io\flutter\plugins\sharedpreferences\MethodCallHandlerImpl.java:182: warning: [unchecked] unchecked
 conversion
          List<String> listValue = new ArrayList<>((Set) value);
                                   ^
  required: List<String>
  found:    ArrayList
4 warnings
Note: C:\Users\Ravi\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\url_launcher-5.2.5\android\src\main\java\io\flutter\plugins\urllauncher\WebViewActivity.java uses or overrides a deprecated API.

我无法弄清楚，如果某些不赞成使用的API导致此问题，那么为什么它可以在调试模式下工作？请帮助我。