Using The Most Recent Version Of Netty on 1.12 Server

My server has a problem where after 2-3 hours i get the message 

WARNING: Failed to re-register a Channel to the new Selector. java.lang.ClassCastException: io.netty.channel.nio.SelectedSelectionKeySetSelector cannot be cast to java.nio.channels.spi.AbstractSelector at java.nio.channels.spi.AbstractSelectableChannel.register(Unknown Source) at io.netty.channel.nio.NioEventLoop.rebuildSelector0(NioEventLoop.java:347) at io.netty.channel.nio.NioEventLoop.rebuildSelector(NioEventLoop.java:318) at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:769) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:388) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) at java.lang.Thread.run(Unknown Source)

and then it proceeds to attempt to migrate channels but no channels are migrated which closes off the ability for people to join the server. I have researched this issue and it appears to be caused by the version of netty that my 1.12 server uses(I have already tried turning off my firewall). How do I make my server use the newest version of netty(I am running a sevtech server)? I have tries things along the lines of 

java -d64 -Xms4G -Xmx4G -cp netty-all-4.1.34.Final.jar;forge-1.12.2-14.23.4.2707-universal.jar net.minecraftforge.fml.relauncher.ServerLaunchWrapper libraries/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar libraries/org/ow2/asm/asm-all/5.2/asm-all-5.2.jar libraries/org/jline/jline/3.5.1/jline-3.5.1.jar libraries/net/java/dev/jna/jna/4.4.0/jna-4.4.0.jar libraries/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar libraries/com/typesafe/config/1.2.1/config-1.2.1.jar libraries/org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar libraries/org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar libraries/org/scala-lang/plugins/scala-continuations-library_2.11/1.0.2/scala-continuations-library_2.11-1.0.2.jar libraries/org/scala-lang/plugins/scala-continuations-plugin_2.11.1/1.0.2/scala-continuations-plugin_2.11.1-1.0.2.jar libraries/org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar libraries/org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar libraries/org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar libraries/org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar libraries/org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar libraries/lzma/lzma/0.0.1/lzma-0.0.1.jar libraries/net/sf/jopt-simple/jopt-simple/5.0.3/jopt-simple-5.0.3.jar libraries/java3d/vecmath/1.5.2/vecmath-1.5.2.jar libraries/net/sf/trove4j/trove4j/3.0.3/trove4j-3.0.3.jar libraries/org/apache/maven/maven-artifact/3.5.3/maven-artifact-3.5.3.jar minecraft_server.1.12.2.jar nogui
pause

from this forum post here however it still gives me the same message from netty saying that channels cannot be switched.