Can't run example on Android 6 and 9 phone

[zzzh]

environment:

wifi_iot-v0.3.19

Flutter 3.19.4 • channel stable • https://github.com/flutter/flutter.git Framework • revision 68bfaea224 (4 weeks ago) • 2024-03-20 15:36:31 -0700 Engine • revision a5c24f538d Tools • Dart 3.3.2 • DevTools 2.31.1

errors: Launching lib\main.dart on Pixel in debug mode... Exception in thread "main" java.net.ConnectException: Connection refused: connect at java.base/java.net.PlainSocketImpl.connect0(Native Method) at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:101) at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399) at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242) at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224) at java.base/java.net.Socket.connect(Socket.java:609) at java.base/java.net.Socket.connect(Socket.java:558) at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:182) at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474) at java.base/sun.net.www.http.HttpClient$1.run(HttpClient.java:526) at java.base/sun.net.www.http.HttpClient$1.run(HttpClient.java:524) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/sun.net.www.http.HttpClient.privilegedOpenServer(HttpClient.java:523) at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:564) at java.base/sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:266) at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:373) at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:212) at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1208) at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081) at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:189) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1592) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1520) at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:250) at org.gradle.wrapper.Download.downloadInternal(Download.java:58) at org.gradle.wrapper.Download.download(Download.java:44) at org.gradle.wrapper.Install$1.call(Install.java:61) at org.gradle.wrapper.Install$1.call(Install.java:48) at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65) at org.gradle.wrapper.Install.createDist(Install.java:48) at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:128) at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61) Error: Gradle task assembleDebug failed with exit code 1

Exited (1).