my server is crashing

[OldaLP]

hello i am trying to run 1.16.5 server but it crashes instantly i cant figure out why it is happening. here is the crash log:

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 3/25/21 11:01 AM
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
    at net.minecraftforge.fml.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:85) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.server.ServerModLoader.load(ServerModLoader.java:51) ~[?:?] {re:classloading}
    at net.minecraft.server.Main.main(Main.java:95) ~[?:?] {re:classloading}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_171] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_171] {}
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_171] {}
    at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:51) ~[server.jar:36.1] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {}
    at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63) [server.jar:?] {}
    at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60) [server.jar:?] {}
    at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) [server.jar:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: main
Stacktrace:
    at net.minecraftforge.fml.CrashReportExtender.lambda$dumpModLoadingCrashReport$7(CrashReportExtender.java:88) ~[?:?] {re:classloading}
-- MOD wawla --
Details:
    Mod File: WAWLA-1.16.5-8.0.1.jar
    Failure message: Mod wawla requires waila 0 or above
        Currently, waila is not installed
    Mod Version: 8.0.1
    Mod Issue URL: https://github.com/Darkhax-Minecraft/Wawla/issues
    Exception message: MISSING EXCEPTION MESSAGE
Stacktrace:
    at net.minecraftforge.fml.CrashReportExtender.lambda$dumpModLoadingCrashReport$7(CrashReportExtender.java:88) ~[?:?] {re:classloading}
    at java.util.ArrayList.forEach(ArrayList.java:1257) ~[?:1.8.0_171] {}
    at net.minecraftforge.fml.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:86) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.server.ServerModLoader.load(ServerModLoader.java:51) ~[?:?] {re:classloading}
    at net.minecraft.server.Main.main(Main.java:95) ~[?:?] {re:classloading}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_171] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_171] {}
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_171] {}
    at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:51) ~[server.jar:36.1] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {}
    at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63) [server.jar:?] {}
    at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60) [server.jar:?] {}
    at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) [server.jar:?] {}

-- System Details --
Details:
    Minecraft Version: 1.16.5
    Minecraft Version ID: 1.16.5
    Operating System: Linux (amd64) version 4.19.0-14-amd64
    Java Version: 1.8.0_171, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 4809633416 bytes (4586 MB) / 5189795840 bytes (4949 MB) up to 5189795840 bytes (4949 MB)
    CPUs: 1
    JVM Flags: 2 total; -Xms5120M -Xmx5120M
    ModLauncher: 8.0.9+86+master.3cf110c
    ModLauncher launch target: fmlserver
    ModLauncher naming: srg
    ModLauncher services: 
        /mixin-0.8.2.jar mixin PLUGINSERVICE 
        /eventbus-4.0.0.jar eventbus PLUGINSERVICE 
        /server.jar object_holder_definalize PLUGINSERVICE 
        /server.jar runtime_enum_extender PLUGINSERVICE 
        /accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE 
        /server.jar capability_inject_definalize PLUGINSERVICE 
        /server.jar runtimedistcleaner PLUGINSERVICE 
        /mixin-0.8.2.jar mixin TRANSFORMATIONSERVICE 
        /OptiFine_1.16.5_HD_U_G7.jar OptiFine TRANSFORMATIONSERVICE 
        /OptiForge-MC1.16.5-0.5.3.jar optiforge TRANSFORMATIONSERVICE 
        /server.jar fml TRANSFORMATIONSERVICE 
        /OptiForge-MC1.16.5-0.5.3.jar FakeOptiFine TRANSFORMATIONSERVICE 
        /OptiForge-MC1.16.5-0.5.3.jar optiforgewrapper TRANSFORMATIONSERVICE 
    FML: 36.1
    Forge: net.minecraftforge:36.1.2
    FML Language Providers: 
        [email protected]
        minecraft@1
    Mod List: 
        forge-1.16.5-36.1.2-server.jar                    |Minecraft                     |minecraft                     |1.16.5              |NONE      |NOSIGNATURE
        forge-1.16.5-36.1.2-universal.jar                 |Forge                         |forge                         |36.1.2              |NONE      |22:af:21:d8:19:82:7f:93:94:fe:2b:ac:b7:e4:41:57:68:39:87:b1:a7:5c:c6:44:f9:25:74:21:14:f5:0d:90
 

[Ugdhar]

1 minute ago, OldaLP said:

Failure message: Mod wawla requires waila 0 or above
        Currently, waila is not installed

The answer is right there in the crash report

[OldaLP]

ok thanks i am stupid i didn't notice

[OldaLP]

i found out that i have installed wawla so i tried to install it again and it isn't working

[Ugdhar]

37 minutes ago, OldaLP said:

i found out that i have installed wawla so i tried to install it again and it isn't working

But, did you install what wawla needs? Read the error again. Also, if it doesn't work, post new logs please