[17:05:01] [main/ERROR] [LaunchWrapper]: Unable to launch

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    [17:05:01] [main/ERROR] [LaunchWrapper]: Unable to launch
    66java.lang.ClassNotFoundException: org.spongepowered.asm.launch.MixinTweaker
    67at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_302]
    68at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_302]
    69at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352) ~[?:1.8.0_302]
    70at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_302]
    71at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.12.jar:?]
    72at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_302]
    73at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_302]
    74at java.lang.Class.forName0(Native Method) ~[?:1.8.0_302]
    75at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_302]
    76at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.12.jar:?]
    77at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
    78at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_302]
    79at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_302]
    80at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_302]
    81at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_302]
    82at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:70) [forge.jar:?]
    83at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34) [forge.jar:?]

    Try installing https://aternos.org/addons/a/curseforge/mixinbootstrap and see if the server crashes