java.net.preferIPv4Stack=true
Installing server to current directory
MESSAGE: Considering minecraft server jar
MESSAGE: Downloading minecraft server version 1.12.2
java.net.UnknownHostException: s3.amazonaws.com
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1950)
	at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1945)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1944)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1514)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
	at net.minecraftforge.installer.DownloadUtils$URLISSupplier.getInput(DownloadUtils.java:457)
	at net.minecraftforge.installer.DownloadUtils$URLISSupplier.getInput(DownloadUtils.java:445)
	at com.google.common.io.ByteStreams$6.openStream(ByteStreams.java:989)
	at com.google.common.io.ByteSource.copyTo(ByteSource.java:202)
	at com.google.common.io.Files.copy(Files.java:382)
	at net.minecraftforge.installer.DownloadUtils.downloadFileEtag(DownloadUtils.java:174)
	at net.minecraftforge.installer.ServerInstall.run(ServerInstall.java:53)
	at net.minecraftforge.installer.InstallerAction.run(InstallerAction.java:43)
	at net.minecraftforge.installer.SimpleInstaller.handleOptions(SimpleInstaller.java:75)
	at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:50)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at net.minecraftforge.installer.Java6Gate.main(Java6Gate.java:48)
Caused by: java.net.UnknownHostException: s3.amazonaws.com
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:606)
	at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:666)
	at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
	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.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:3061)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getHeaderField(HttpsURLConnectionImpl.java:305)
	at net.minecraftforge.installer.DownloadUtils.downloadFileEtag(DownloadUtils.java:163)
	... 9 more
Downloading minecraft server failed, invalid e-tag checksum.
Try again, or manually place server jar to skip download.
There was an error during server installation