SSLV3_ALERT_CERTIFICATE_UNKNOWN during handshake in Android Q version

I have added self-signed certificate for client-server communication using "TLSv1" protocol working perfectly in all device, but in Android Q preview during the handshake process getting the following exception

The error can be generated from procedtoUnsafe or adding exception from browser

D/FA: Logging event (FE): user_engagement(_e), Bundle[{firebase_event_origin(_o)=auto, engagement_time_msec(_et)=9551, firebase_screen_class(_sc)=HomeActivity, firebase_screen_id(_si)=-2452361814686810599}]
    D/FA: Connected to remote service
    W/antra.rdservic: Accessing hidden method Ljava/net/InetAddress;->holder()Ljava/net/InetAddress$InetAddressHolder; (greylist, reflection, allowed)
    W/antra.rdservic: Accessing hidden method Ljava/net/InetAddress$InetAddressHolder;->getOriginalHostName()Ljava/lang/String; (greylist-max-o, reflection, denied)
    W/antra.rdservic: Accessing hidden method Ldalvik/system/CloseGuard;->close()V (greylist,core-platform-api, linking, allowed)
    W/System.err: javax.net.ssl.SSLHandshakeException: Handshake failed
    W/System.err:     at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(:com.google.android.gms@17122037@17.1.22 (100400-245988633):35)
    W/System.err:     at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.waitForHandshake(:com.google.android.gms@17122037@17.1.22 (100400-245988633):1)
    W/System.err:     at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.getOutputStream(:com.google.android.gms@17122037@17.1.22 (100400-245988633):5)
    W/System.err:     at com.mantra.rdservice.sslservice.SslServer.runSecureServer(SslServer.java:121)
    W/System.err:     at com.mantra.rdservice.sslservice.SslServer.runServer(SslServer.java:157)
    W/System.err:     at com.mantra.rdservice.sslservice.SslServer.findPort(SslServer.java:106)
    W/System.err:     at com.mantra.rdservice.sslservice.SecureService$1.run(SecureService.java:74)
    W/System.err:     at java.lang.Thread.run(Thread.java:919)
    W/System.err: Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xc386a398: Failure in SSL library, usually a protocol error
    W/System.err: error:10000416:SSL routines:OPENSSL_internal:SSLV3_ALERT_CERTIFICATE_UNKNOWN (third_party/openssl/boringssl/src/ssl/tls_record.cc:587 0xc5e7a888:0x00000001)
    W/System.err:     at com.google.android.gms.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
    W/System.err:     at com.google.android.gms.org.conscrypt.NativeSsl.doHandshake(:com.google.android.gms@17122037@17.1.22 (100400-245988633):7)
    W/System.err:     at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(:com.google.android.gms@17122037@17.1.22 (100400-245988633):14)
    W/System.err:   ... 7 more
    W/antra.rdservic: Accessing hidden method Ljava/net/InetAddress$InetAddressHolder;->getOriginalHostName()Ljava/lang/String; (greylist-max-o, reflection, denied)
    W/antra.rdservic: Accessing hidden method Ljava/net/InetAddress$InetAddressHolder;->getOriginalHostName()Ljava/lang/String; (greylist-max-o, reflection, denied)

i have added function that created connection

Loopback ="127.0.0.1";

private void runSecureServer(final int port) throws Exception {
        final ServerSocket socket = createSSLSocket();
        socket.bind(new InetSocketAddress(Loopback, port));
        socket.setReuseAddress(true);
        this._url = "https://" + Loopback + ":" + String.valueOf(port) + "/";
        while (true) {
            try {
                Socket client = socket.accept();
                PrintWriter outputStream = new PrintWriter(client.getOutputStream(), true);
                BufferedReader inputStream = new BufferedReader(new InputStreamReader(client.getInputStream()));
                StringBuilder finalData = new StringBuilder();
                String inputLine;
                while ((inputLine = inputStream.readLine()) != null && !inputLine.equals("")) {
                    finalData.append(inputLine).append("\r\n");
                }
                executorService.execute(new HttpProcessor(ctx, _url, client, outputStream, inputStream, finalData.toString()));
            } catch (Exception ex) {
                ex.printStackTrace();
                socket.close();
                runServer(port);
                break;
            }
        }

    }

I have referred StackOverflow question but no solution found