Nintenso Phyrx

I installed it right from its original website i remember

[21:21:13] [main/INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [21:21:14] [main/ERROR]: Unable to launch java.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweaker at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_221] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221] at java.lang.Class.forName0(Native Method) ~[?:1.8.0_221] at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_221] at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?] Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release I'm directly going into the topic Recently I downloaded a mod named ModBlocker for a Pixelmon server Besides that I have OptiFine E_3 and Pixelmon 7.0.8 When I don't use ModBlocker, game starts but the server will not let me enter When I do, it doesn't What should I do? [Edit: I also searched for a solution for this. It's been like 8+ hours but i can't find anything]