Need some help

For some reason, I have downloaded forge and put spongeforge into the mods folder. However, for some reason the sponge won’t work in the server. I also get a notification that you should update to Java 8. However, I got no idea on how to do it so any help would be appreciated.

Im follwing this link below on how to update to Java 8, however, I cannot seem to find the certain file they are looking for:
https://cubedhost.com/billing/knowledgebase/163/How-do-I-change-my-servers-Java-version.html

Console output:

28.01 09:01:13 [Multicraft] Received start command
28.01 09:01:13 [Multicraft] Loading server properties
28.01 09:01:13 [Multicraft] Starting server!
28.01 09:01:13 [Multicraft] Loaded config for “PermGen 256 MB (Custom JAR)”
28.01 09:01:13 [Multicraft] Updating eula.txt file
28.01 09:01:15 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLServerTweaker
28.01 09:01:15 [Server] main/INFO [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLServerTweaker
28.01 09:01:15 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLServerTweaker
28.01 09:01:17 [Server] INFO 2018-01-28 06:01:17,588 WARN Disabling terminal, you’re running in an unsupported environment.
28.01 09:01:18 [Server] main/INFO [FML]: Forge Mod Loader version 12.18.3.2477 for Minecraft 1.10.2 loading
28.01 09:01:18 [Server] main/INFO [FML]: Java is Java HotSpot™ 64-Bit Server VM, version 1.7.0_79, running on Linux:amd64:2.6.32-042stab120.16, installed at /opt/jdk1.7.0_79/jre
28.01 09:01:18 [Server] main/INFO [FML]: Loading tweaker org.spongepowered.asm.launch.MixinTweaker from spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar
28.01 09:01:18 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
28.01 09:01:18 [Server] main/INFO [LaunchWrapper]: Loading tweak class name org.spongepowered.asm.launch.MixinTweaker
28.01 09:01:18 [Server] main/INFO [mixin]: SpongePowered MIXIN Subsystem Version=0.7.4 Source=file:/mods/spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar Service=LaunchWrapper Env=SERVER
28.01 09:01:18 [Server] main/ERROR [mixin]: catching
28.01 09:01:18 [Server] INFO java.lang.reflect.InvocationTargetException
28.01 09:01:18 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_79]
28.01 09:01:18 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_79]
28.01 09:01:18 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_79]
28.01 09:01:18 [Server] INFO at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_79]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.platform.MixinPlatformAgentFML.injectCorePlugin(MixinPlatformAgentFML.java:228) ~[spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.platform.MixinPlatformAgentFML.initFMLCoreMod(MixinPlatformAgentFML.java:155) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.platform.MixinPlatformAgentFML.(MixinPlatformAgentFML.java:134) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at java.lang.reflect.Constructor.newInstance(Constructor.java:526) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.platform.MixinContainer.(MixinContainer.java:68) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.platform.MixinPlatformManager.addContainer(MixinPlatformManager.java:142) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.platform.MixinPlatformManager.init(MixinPlatformManager.java:106) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.MixinBootstrap.getPlatform(MixinBootstrap.java:106) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.MixinBootstrap.start(MixinBootstrap.java:158) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at org.spongepowered.asm.launch.MixinTweaker.(MixinTweaker.java:44) [spongeforge-1.12.2-2555-7.1.0-BETA-2851.jar:1.12.2-2555-7.1.0-BETA-2851]
28.01 09:01:18 [Server] INFO at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [?:1.7.0_79]
28.01 09:01:18 [Server] INFO at java.lang.reflect.Constructor.newInstance(Constructor.java:526) [?:1.7.0_79]
28.01 09:01:19 [Multicraft] Skipped 30 lines due to rate limit (30/s)
28.01 09:01:19 [Server] main/INFO [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
28.01 09:01:19 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
28.01 09:01:19 [Server] main/INFO [LaunchWrapper]: Calling tweak class org.spongepowered.asm.launch.MixinTweaker
28.01 09:01:22 [Server] main/INFO [mixin]: Initialised Mixin FML Remapper Adapter with net.minecraftforge.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper@38942215
28.01 09:01:22 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
28.01 09:01:22 [Server] main/ERROR [FML]: The game is not running with Java 8. Forge recommends Java 8 for maximum compatibility with mods
28.01 09:01:23 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
28.01 09:01:23 [Server] main/INFO [LaunchWrapper]: Loading tweak class name org.spongepowered.asm.mixin.EnvironmentStateTweaker
28.01 09:01:23 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
28.01 09:01:23 [Server] main/INFO [LaunchWrapper]: Calling tweak class org.spongepowered.asm.mixin.EnvironmentStateTweaker
28.01 09:01:24 [Server] main/INFO [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.server.MinecraftServer}
28.01 09:01:27 [Server] Server thread/INFO Starting minecraft server version 1.10.2
28.01 09:01:27 [Server] Server thread/INFO [FML]: MinecraftForge v12.18.3.2477 Initialized
28.01 09:01:27 [Server] Server thread/INFO [FML]: Replaced 231 ore recipes
28.01 09:01:28 [Server] Server thread/INFO [FML]: Found 0 mods from the command line. Injecting into mod discoverer
28.01 09:01:28 [Server] Server thread/INFO [FML]: Searching /mods for mods
28.01 09:01:28 [Server] Server thread/INFO [FML]: Forge Mod Loader has identified 3 mods to load
28.01 09:01:29 [Server] Server thread/INFO [FML]: Attempting connection with missing mods [mcp, FML, Forge] at CLIENT
28.01 09:01:29 [Server] Server thread/INFO [FML]: Attempting connection with missing mods [mcp, FML, Forge] at SERVER
28.01 09:01:29 [Server] Server thread/INFO [FML]: Processing ObjectHolder annotations
28.01 09:01:29 [Server] Server thread/INFO [FML]: Found 423 ObjectHolder annotations
28.01 09:01:29 [Server] Server thread/INFO [FML]: Identifying ItemStackHolder annotations
28.01 09:01:29 [Server] Server thread/INFO [FML]: Found 0 ItemStackHolder annotations
28.01 09:01:29 [Server] Server thread/INFO [FML]: Applying holder lookups
28.01 09:01:29 [Server] Server thread/INFO [FML]: Holder lookups applied
28.01 09:01:29 [Server] Server thread/INFO [FML]: Applying holder lookups
28.01 09:01:29 [Server] Server thread/INFO [FML]: Holder lookups applied
28.01 09:01:29 [Server] Server thread/INFO [FML]: Applying holder lookups
28.01 09:01:29 [Server] Server thread/INFO [FML]: Holder lookups applied
28.01 09:01:29 [Server] Server thread/INFO [FML]: Configured a dormant chunk cache size of 0
28.01 09:01:29 [Server] Forge Version Check/INFO [ForgeVersionCheck]: [Forge] Starting version check at http://files.minecraftforge.net/maven/net/minecraftforge/forge/promotions_slim.json
28.01 09:01:29 [Server] Server thread/INFO [FML]: Applying holder lookups
28.01 09:01:29 [Server] Server thread/INFO [FML]: Holder lookups applied
28.01 09:01:29 [Server] Server thread/INFO [FML]: Injecting itemstacks
28.01 09:01:29 [Server] Server thread/INFO [FML]: Itemstack injection complete
28.01 09:01:29 [Server] Server thread/INFO Loading properties
28.01 09:01:29 [Server] Server thread/INFO Default game type: SURVIVAL
28.01 09:01:29 [Server] Server thread/INFO Generating keypair
28.01 09:01:29 [Server] Forge Version Check/INFO [ForgeVersionCheck]: [Forge] Found status: OUTDATED Target: 12.18.3.2511
28.01 09:01:29 [Server] Server thread/INFO Starting Minecraft server on 108.61.50.246:25565
28.01 09:01:29 [Server] Server thread/INFO Using epoll channel type
28.01 09:01:29 [Server] Server thread/INFO [FML]: Injecting itemstacks
28.01 09:01:29 [Server] Server thread/INFO [FML]: Itemstack injection complete
28.01 09:01:30 [Server] Server thread/INFO [FML]: Forge Mod Loader has successfully loaded 3 mods
28.01 09:01:30 [Server] Server thread/INFO Preparing level “world”
28.01 09:01:30 [Server] Server thread/INFO [FML]: Loading dimension 0 (world) (net.minecraft.server.dedicated.DedicatedServer@20288b7c)
28.01 09:01:31 [Server] Server thread/INFO [FML]: Loading dimension 1 (world) (net.minecraft.server.dedicated.DedicatedServer@20288b7c)
28.01 09:01:31 [Server] Server thread/INFO [FML]: Loading dimension -1 (world) (net.minecraft.server.dedicated.DedicatedServer@20288b7c)
28.01 09:01:31 [Server] Server thread/INFO Preparing start region for level 0
28.01 09:01:32 [Server] Server thread/INFO Preparing spawn area: 4%
28.01 09:01:33 [Server] Server thread/INFO Preparing spawn area: 9%
28.01 09:01:34 [Server] Server thread/INFO Preparing spawn area: 18%
28.01 09:01:35 [Server] Server thread/INFO Preparing spawn area: 27%
28.01 09:01:36 [Server] Server thread/INFO Preparing spawn area: 37%
28.01 09:01:37 [Server] Server thread/INFO Preparing spawn area: 46%
28.01 09:01:38 [Server] Server thread/INFO Preparing spawn area: 55%
28.01 09:01:39 [Server] Server thread/INFO Preparing spawn area: 62%
28.01 09:01:40 [Server] Server thread/INFO Preparing spawn area: 72%
28.01 09:01:41 [Server] Server thread/INFO Preparing spawn area: 80%
28.01 09:01:42 [Server] Server thread/INFO Preparing spawn area: 88%
28.01 09:01:43 [Server] Server thread/INFO Preparing spawn area: 97%
28.01 09:01:44 [Server] Startup Done (14.238s)! For help, type “help” or “?”

The message is correct, you are running Java 7. You should direct this to your hosting company if you need support for changing your Java version.

As an ending note, if you have large stacktraces or log files it is preferred to include them in a gist (https://gist.github.com) so it’s easier to read and doesn’t take up excess space on the thread.

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