Flatterlauf auf Android löst Fehler bei der PKIX-Pfaderstellung aus ⇐ Android

[Guest]

Ich renne

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flutter run

auf der Standard-Flutter-App, die gerade auf meinem Android-Emulator von meinen MacOS erstellt wurde (die Zählervorlage).
Ich erhalte die Fehlermeldung

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Exception in thread "main" javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.ssl.Alert.createSSLException(Unknown Source)
at java.base/sun.security.ssl.TransportContext.fatal(Unknown Source)
at java.base/sun.security.ssl.TransportContext.fatal(Unknown Source)
at java.base/sun.security.ssl.TransportContext.fatal(Unknown Source)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(Unknown Source)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.onConsumeCertificate(Unknown Source)
at java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.consume(Unknown Source)
at java.base/sun.security.ssl.SSLHandshake.consume(Unknown Source)
at java.base/sun.security.ssl.HandshakeContext.dispatch(Unknown Source)
at java.base/sun.security.ssl.HandshakeContext.dispatch(Unknown Source)
at java.base/sun.security.ssl.TransportContext.dispatch(Unknown Source)
at java.base/sun.security.ssl.SSLTransport.decode(Unknown Source)
at java.base/sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(Unknown Source)
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
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)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at java.base/sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at java.base/sun.security.validator.Validator.validate(Unknown Source)
at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
... 25 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
at java.base/java.security.cert.CertPathBuilder.build(Unknown Source)
... 30 more
Running Gradle task 'assembleDebug'...                             402ms
Error: Gradle task assembleDebug failed with exit code 1

In dieser Frage wird erwähnt, dass es aufgrund einiger Firewall-Regeln passiert ist. Möglicherweise befinde ich mich in der gleichen Situation.
Wie kann ich herausfinden, welche URLs blockiert werden/nicht geladen werden können?

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flutter run --verbose

scheint keine weiteren Informationen bereitzustellen