[1.12.2] "no lwjgl64 in java.library.path" Crash

Hi, 

I've recently been working on my mod for Minecraft, I was able to run the Client on Eclipse up until recently when I keep getting this crash:

xception in thread "main" java.lang.UnsatisfiedLinkError: no lwjgl64 in java.library.path
	at java.lang.ClassLoader.loadLibrary(Unknown Source)
	at java.lang.Runtime.loadLibrary0(Unknown Source)
	at java.lang.System.loadLibrary(Unknown Source)
	at org.lwjgl.Sys$1.run(Sys.java:72)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.lwjgl.Sys.doLoadLibrary(Sys.java:66)
	at org.lwjgl.Sys.loadLibrary(Sys.java:87)
	at org.lwjgl.Sys.<clinit>(Sys.java:117)
	at net.minecraft.client.Minecraft.getSystemTime(Minecraft.java:3159)
	at net.minecraft.client.main.Main.main(Main.java:42)
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

I've tried to designate the native build location to my lwjgl-2.9.4-nightly.jar and similar jars for my native library location in the JRE System Library, but no solutions were made. 

Any help is appreciated, thank you!