I get this error :(
[17:45:52 INFO]: [TheNewEconomy] Enabling TheNewEconomy v0.0.5.5
[17:45:54 WARN]: java.net.ConnectException: Connection refused: connect
[17:45:54 WARN]: at java.net.DualStackPlainSocketImpl.connect0(Native Method)
[17:45:54 WARN]: at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
[17:45:54 WARN]: at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
[17:45:54 WARN]: at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
[17:45:54 WARN]: at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
[17:45:54 WARN]: at java.net.PlainSocketImpl.connect(Unknown Source)
[17:45:54 WARN]: at java.net.SocksSocketImpl.connect(Unknown Source)
[17:45:54 WARN]: at java.net.Socket.connect(Unknown Source)
[17:45:54 WARN]: at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
[17:45:54 WARN]: at sun.security.ssl.BaseSSLSocketImpl.connect(Unknown Source)
[17:45:54 WARN]: at sun.net.NetworkClient.doConnect(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.http.HttpClient.openServer(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.http.HttpClient.openServer(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.https.HttpsClient.<init>(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.https.HttpsClient.New(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
[17:45:54 WARN]: at sun.net.
www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
[17:45:54 WARN]: at java.net.URL.openStream(Unknown Source)
[17:45:54 WARN]: at com.github.tnerevival.core.UpdateChecker.getLatestBuild(UpdateChecker.java:22)
[17:45:54 WARN]: at com.github.tnerevival.core.UpdateChecker.<init>(UpdateChecker.java:14)
[17:45:54 WARN]: at com.github.tnerevival.TNE.onEnable(TNE.java:93)
[17:45:54 WARN]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264)
[17:45:54 WARN]: at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:329)
[17:45:54 WARN]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:401)
[17:45:54 WARN]: at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:370)
[17:45:54 WARN]: at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:331)
[17:45:54 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:412)
[17:45:54 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:373)
[17:45:54 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:328)
[17:45:54 WARN]: at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:248)
[17:45:54 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:522)
[17:45:54 WARN]: at java.lang.Thread.run(Unknown Source)