HttpURLConnection.plainConnect0() has thrown an UnknownHostException

We found this prefix in 15 webpages.
MapChildren (2)Typical messages (13)TraceDetailed Map
  1. java.net.UnknownHostException
    1.   at java.net.AbstractPlainSocketImpl.connect()
    2.   at java.net.PlainSocketImpl.connect()
    3.   at java.net.SocksSocketImpl.connect()
    4.   at java.net.Socket.connect()
    5.   at sun.net.NetworkClient.doConnect()
    6.   at sun.net.www.http.HttpClient.openServer()
    7.   at sun.net.www.http.HttpClient.openServer()
    8.   at sun.net.www.http.HttpClient.<init>()
    9.   at sun.net.www.http.HttpClient.New()
    10.   at sun.net.www.http.HttpClient.New()
    11.   at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient()
    12.   at sun.net.www.protocol.http.HttpURLConnection.plainConnect0()
  1. UnknownHostException

    HttpURLConnection.connect()
    Crashes:20
    Projects:0
    Web Pages:14
    Error Reports:0
    First:10 months ago
    Last:7 months ago
    preview
  2. Update of the Google Scholar PDF Metadata Retrieval Library « Docear

    First:2 years ago
    Last:2 years ago
MessageNumber of crashes
updates.jenkins-ci.org3
downloads.arduino.cc1
www.r18.com1
www.terracotta.org1
tdcwstd3va005.uswin.ad.vzwcorp.com1
raspberrpi.local1
Could not open inputStream for http://downloads.mongodb.org/win32/mongodb-win32-x86_64-2008plus-3.0.5.zip with proxy DIRECT1
java.net.UnknownHostException: t%C3%A5g.info1
download.jetbrains.com1
Error getting access token from metadata server at: http://metadata/computeMetadata/v1/instance/service-accounts/default/token1
  1. java.net.UnknownHostException
    1.   at java.net.AbstractPlainSocketImpl.connect()
    2.   at java.net.PlainSocketImpl.connect()
    3.   at java.net.SocksSocketImpl.connect()
    4.   at java.net.Socket.connect()
    5.   at sun.net.NetworkClient.doConnect()
    6.   at sun.net.www.http.HttpClient.openServer()
    7.   at sun.net.www.http.HttpClient.openServer()
    8.   at sun.net.www.http.HttpClient.<init>()
    9.   at sun.net.www.http.HttpClient.New()
    10.   at sun.net.www.http.HttpClient.New()
    11.   at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient()
    12.   at sun.net.www.protocol.http.HttpURLConnection.plainConnect0()