Got a error loading Modular Machinery

[ShadowPlayerTTV]

Hi, I got this random error:
net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Modular Machinery: Community Edition (modularmachinery)
Caused by: java.lang.NoClassDefFoundError: appeng/api/implementations/IPowerChannelState
at hellfirepvp.modularmachinery.common.integration.ModIntegrationTOP.registerProviders(ModIntegrationTOP.java:24)
at hellfirepvp.modularmachinery.common.CommonProxy.init(CommonProxy.java:179)
at hellfirepvp.modularmachinery.client.ClientProxy.init(ClientProxy.java:221)
at hellfirepvp.modularmachinery.ModularMachinery.init(ModularMachinery.java:145)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:663)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:84)
at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:141)
at com.google.common.eventbus.Subscriber.lambda$dispatchEvent$0(Subscriber.java:70)
at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:67)
at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:112)
at com.google.common.eventbus.EventBus.post(EventBus.java:262)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:318)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:296)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:84)
at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:141)
at com.google.common.eventbus.Subscriber.lambda$dispatchEvent$0(Subscriber.java:70)
at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:67)
at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:112)
at com.google.common.eventbus.EventBus.post(EventBus.java:262)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:232)
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:747)
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:338)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:531)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:374)
at net.minecraft.client.main.Main.main(SourceFile:123)
at top.outlands.foundation.LaunchHandler.launch(LaunchHandler.java:125)
at top.outlands.foundation.boot.Foundation.main(Foundation.java:42)
at com.cleanroommc.relauncher.wrapper.RelaunchMainWrapper.main(RelaunchMainWrapper.java:20)
Caused by: java.lang.ClassNotFoundException: appeng.api.implementations.IPowerChannelState
at top.outlands.foundation.boot.ActualClassLoader.findClass(ActualClassLoader.java:264)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at top.outlands.foundation.boot.ActualClassLoader.loadClass(ActualClassLoader.java:275)
... 36 more
Caused by: java.lang.ClassNotFoundException
at top.outlands.foundation.boot.ActualClassLoader.findClass(ActualClassLoader.java:247)
... 39 more