UpdateCheckThread.run() has thrown a FileNotFoundException

We found this prefix in 2 webpages.
MapChildren (2)Typical messages (2)TraceDetailed Map
  1. java.io.FileNotFoundException
    1.   at sun.net.www.protocol.http.HttpURLConnection.getInputStream0()
    2.   at sun.net.www.protocol.http.HttpURLConnection.access$200()
    3.   at sun.net.www.protocol.http.HttpURLConnection$9.run()
    4.   at sun.net.www.protocol.http.HttpURLConnection$9.run()
    5.   at java.security.AccessController.doPrivileged()
    6.   at java.security.AccessController.doPrivilegedWithCombiner()
    7.   at sun.net.www.protocol.http.HttpURLConnection.getInputStream()
    8.   at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream()
    9.   at java.net.URL.openStream()
    10.   at cofh.mod.updater.UpdateCheckThread.run()
  1. GitHub iconMaterial with id null is already registered

    First:2 years ago
    Last:2 years ago
    Author:BluieGamer
  2. GitHub iconServer will not start

    First:3 months ago
    Last:2 months ago
    Author:Nebnitan
MessageNumber of crashes
https://raw.githubusercontent.com/CoFH/RedstoneArsenal/master/VERSION1
https://raw.githubusercontent.com/CoFH/VERSION/master/RedstoneArsenal1
  1. java.io.FileNotFoundException
    1.   at sun.net.www.protocol.http.HttpURLConnection.getInputStream0()
    2.   at sun.net.www.protocol.http.HttpURLConnection.access$200()
    3.   at sun.net.www.protocol.http.HttpURLConnection$9.run()
    4.   at sun.net.www.protocol.http.HttpURLConnection$9.run()
    5.   at java.security.AccessController.doPrivileged()
    6.   at java.security.AccessController.doPrivilegedWithCombiner()
    7.   at sun.net.www.protocol.http.HttpURLConnection.getInputStream()
    8.   at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream()
    9.   at java.net.URL.openStream()
    10.   at cofh.mod.updater.UpdateCheckThread.run()