Failed to send crash report due to a network error: SocketException: Connection failed (OS Error: Network is unreachable, errno = 101), address = clients2.google.com, port = 443

[Liz Betanzos]

Can you please help me to know why I have this error?

ubuntuadm@GNPAMPRO01:/conf/AppMoviles/demo/DemoAppMov_2/MVL_FLUTTER_AGENTES$ /conf/AppMoviles/software/flutter1.5.4/bin/./flutter build apk
Initializing gradle...
(This is taking an unexpectedly long time.)       ⢿
Oops; flutteSending crash report to Google.
Failed to send crash report due to a network error: SocketException: Connection failed (OS Error: Network is unreachable, errno
= 101), address = clients2.google.com, port = 443
Initializing gradle...                                          ((This is taking an unexpectedly long time.)
Crash report written to /conf/AppMoviles/demo/DemoAppMov_2/MVL_FLUTTER_AGENTES/flutter_01.log;
please let us know at https://github.com/flutter/flutter/issues.

This is the  log:

  flutter_01.log;  

Downloading https://services.gradle.org/distributions/gradle-4.10.2-all.zip


Exception in thread "main" java.net.ConnectException: Connection timed out (Connection timed out)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:666)
        at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173)
        at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
        at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
        at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1570)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
        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)
"flutter_01.log" 101L, 5940C                                                                                 7,1           Top