I tried to add essential as a mod and its just saying some stuff in dont understand sorry that im not explayning it but i dont understand it just wanted to ask if its easy to fix.

it says:
net.fabricmc.loader.impl.FormattedException: java.lang.RuntimeException: Could not execute entrypoint stage 'preLaunch' due to errors, provided by 'essential-loader'!
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:159)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:71)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.lang.RuntimeException: Could not execute entrypoint stage 'preLaunch' due to errors, provided by 'essential-loader'!
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.lambda$invoke0$0(EntrypointUtils.java:51)
at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:49)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke(EntrypointUtils.java:35)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:157)
... 2 more
Caused by: net.fabricmc.loader.api.EntrypointException: Exception while loading entries for entrypoint 'preLaunch' provided by 'essential-loader'
at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:56)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:47)
... 4 more
Caused by: net.fabricmc.loader.api.LanguageAdapterException: java.lang.reflect.InvocationTargetException
at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:60)
at net.fabricmc.loader.impl.entrypoint.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:117)
at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:53)
... 5 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:58)
... 7 more
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at gg.essential.loader.stage0.EssentialSetupPreLaunch.(EssentialSetupPreLaunch.java:22)
... 13 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at gg.essential.loader.stage0.EssentialSetupPreLaunch.loadStage1(EssentialSetupPreLaunch.java:37)
at gg.essential.loader.stage0.EssentialSetupPreLaunch.(EssentialSetupPreLaunch.java:20)
... 13 more
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at gg.essential.loader.stage1.EssentialLoaderBase.load(EssentialLoaderBase.java:110)
at gg.essential.loader.stage1.EssentialSetupPreLaunch.(EssentialSetupPreLaunch.java:18)
... 20 more
Caused by: java.nio.file.FileSystemException: C:\Users\ImToo\curseforge\minecraft\Instances\All of Fabric 5 - 1.18.1\essential\Essential (fabric_1.18.1).jar: The process cannot access the file because it is being used by another process
at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92)
at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
at java.base/sun.nio.fs.WindowsFileSystemProvider.checkReadAccess(WindowsFileSystemProvider.java:351)
at java.base/sun.nio.fs.WindowsFileSystemProvider.checkAccess(WindowsFileSystemProvider.java:380)
at jdk.zipfs/jdk.nio.zipfs.ZipFileSystem.(ZipFileSystem.java:165)
at jdk.zipfs/jdk.nio.zipfs.ZipFileSystemProvider.getZipFileSystem(ZipFileSystemProvider.java:125)
at jdk.zipfs/jdk.nio.zipfs.ZipFileSystemProvider.newFileSystem(ZipFileSystemProvider.java:120)
at java.base/java.nio.file.FileSystems.newFileSystem(FileSystems.java:528)
at java.base/java.nio.file.FileSystems.newFileSystem(FileSystems.java:400)
at gg.essential.loader.stage2.EssentialLoaderBase.extractJarsInJar(EssentialLoaderBase.java:284)
at gg.essential.loader.stage2.EssentialLoaderBase.load(EssentialLoaderBase.java:134)
... 26 more

I would love to add essential because it just makes multiplayer with friends really easy

I believe you would find asking the mod devs for the mod that is crashing more helpful.

I just tried to add bobby but that doesent work either can i not add mods is that disabled somehow?