这是后台的报错，有人能知道为什么吗。最近也没有干什么，服务器一直没人玩，重启之后就这样了
17.06 14:52:36 [Multicraft] Server stopped
17.06 14:52:36 [Multicraft] Looks like a crash, check the server console. Return value: 2
17.06 14:52:36 [Multicraft] Server shut down
17.06 14:52:36 [Multicraft] KILL signal could not be sent: [Error 5]
17.06 14:52:36 [Multicraft] Forcefully killing server
17.06 14:52:36 [Multicraft] Server shut down
17.06 14:52:36 [Multicraft] Terminating server via signal
17.06 14:52:04 [Multicraft] Stopping server!
17.06 14:52:04 [Multicraft] Received stop command
17.06 14:51:16 [Server] INFO Stopping server
17.06 14:51:14 [Server] INFO Set PluginClassLoader as parallel capable
17.06 14:51:14 [Server] INFO ... 5 more
17.06 14:51:14 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:150) ~[java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:14 [Server] INFO at java.util.jar.JarFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:14 [Server] INFO at java.util.jar.JarFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:14 [Server] INFO at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:13 [Server] INFO at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:13 [Server] INFO at java.util.zip.ZipFile.open(Native Method) ~[?:1.8.0_121]
17.06 14:51:13 [Server] INFO Caused by: java.util.zip.ZipException: error in opening zip file
17.06 14:51:13 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:290) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:162) ~[java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
17.06 14:51:13 [Server] ERROR Could not load 'plugins\BarAPI.jar' in folder 'plugins'
17.06 14:51:13 [Server] INFO ... 6 more
17.06 14:51:13 [Server] INFO Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml
17.06 14:51:13 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:290) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:154) ~[java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
17.06 14:51:13 [Server] ERROR Could not load 'plugins\AntiCheatClient.jar' in folder 'plugins'
17.06 14:51:13 [Server] INFO Starting Minecraft server on 0.0.0.0:26451
17.06 14:51:13 [Server] INFO Generating keypair
17.06 14:51:13 [Server] INFO Using 4 threads for Netty based IO
17.06 14:51:13 [Server] INFO Server Ping Player Sample Count: 12
17.06 14:51:13 [Server] INFO Debug logging is disabled
17.06 14:51:13 [Server] INFO This server is running CraftBukkit version git-Spigot-e497721-96d09e3 (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
17.06 14:51:12 [Server] INFO Default game type: SURVIVAL
17.06 14:51:12 [Server] INFO Loading properties
17.06 14:51:12 [Server] INFO Starting minecraft server version 1.8
17.06 14:51:09 [Server] INFO 2018-06-17 14:51:09,577 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
17.06 14:51:07 [Server] INFO Loading libraries, please wait...
17.06 14:51:06 [Multicraft] Loaded config for "[JAVA8] Spigot-1.8.0(插件服,更稳定)"
17.06 14:52:36 [Multicraft] Server stopped
17.06 14:52:36 [Multicraft] Looks like a crash, check the server console. Return value: 2
17.06 14:52:36 [Multicraft] Server shut down
17.06 14:52:36 [Multicraft] KILL signal could not be sent: [Error 5]
17.06 14:52:36 [Multicraft] Forcefully killing server
17.06 14:52:36 [Multicraft] Server shut down
17.06 14:52:36 [Multicraft] Terminating server via signal
17.06 14:52:04 [Multicraft] Stopping server!
17.06 14:52:04 [Multicraft] Received stop command
17.06 14:51:16 [Server] INFO Stopping server
17.06 14:51:14 [Server] INFO Set PluginClassLoader as parallel capable
17.06 14:51:14 [Server] INFO ... 5 more
17.06 14:51:14 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:150) ~[java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:14 [Server] INFO at java.util.jar.JarFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:14 [Server] INFO at java.util.jar.JarFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:14 [Server] INFO at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:13 [Server] INFO at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.8.0_121]
17.06 14:51:13 [Server] INFO at java.util.zip.ZipFile.open(Native Method) ~[?:1.8.0_121]
17.06 14:51:13 [Server] INFO Caused by: java.util.zip.ZipException: error in opening zip file
17.06 14:51:13 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:290) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:162) ~[java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
17.06 14:51:13 [Server] ERROR Could not load 'plugins\BarAPI.jar' in folder 'plugins'
17.06 14:51:13 [Server] INFO ... 6 more
17.06 14:51:13 [Server] INFO Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml
17.06 14:51:13 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:290) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:154) ~[java8-spigot-1.8.0.jar:git-Spigot-e497721-96d09e3]
17.06 14:51:13 [Server] INFO org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
17.06 14:51:13 [Server] ERROR Could not load 'plugins\AntiCheatClient.jar' in folder 'plugins'
17.06 14:51:13 [Server] INFO Starting Minecraft server on 0.0.0.0:26451
17.06 14:51:13 [Server] INFO Generating keypair
17.06 14:51:13 [Server] INFO Using 4 threads for Netty based IO
17.06 14:51:13 [Server] INFO Server Ping Player Sample Count: 12
17.06 14:51:13 [Server] INFO Debug logging is disabled
17.06 14:51:13 [Server] INFO This server is running CraftBukkit version git-Spigot-e497721-96d09e3 (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
17.06 14:51:12 [Server] INFO Default game type: SURVIVAL
17.06 14:51:12 [Server] INFO Loading properties
17.06 14:51:12 [Server] INFO Starting minecraft server version 1.8
17.06 14:51:09 [Server] INFO 2018-06-17 14:51:09,577 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
17.06 14:51:07 [Server] INFO Loading libraries, please wait...
17.06 14:51:06 [Multicraft] Loaded config for "[JAVA8] Spigot-1.8.0(插件服,更稳定)"