I made a forge server but it keeps crashing when I try to start it (latest version for 1.16.5). I tried redownloading aswell, same thing happened. I would really appriciate it if someone could tell me why this is and how I would fix it, thanks!

Console log:

[16:06:16] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.8, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge]
[16:06:16] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 1.8.0_282 by Oracle Corporation
[16:06:16] [main/INFO] [ne.mi.fm.lo.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[16:06:16] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/home/container/libraries/org/spongepowered/mixin/0.8.4/mixin-0.8.4.jar Service=ModLauncher Env=SERVER
[16:06:18] [pool-2-thread-1/ERROR] [ne.mi.fm.lo.mo.BackgroundScanHandler/SCAN]: An error occurred scanning file Mod File: /home/container/libraries/net/minecraftforge/forge/1.16.5-36.2.8/forge-1.16.5-36.2.8-server.jar
java.util.concurrent.CompletionException: java.lang.ArrayIndexOutOfBoundsException: 1842030787
at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273) ~[?:1.8.0_282] {}
at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280) [?:1.8.0_282] {}
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1606) [?:1.8.0_282] {}
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_282] {}
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_282] {}
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282] {}
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1842030787
at org.objectweb.asm.ClassReader.readInt(ClassReader.java:3597) ~[asm-9.1.jar:9.1] {}
at org.objectweb.asm.ClassReader.getFirstAttributeOffset(ClassReader.java:3436) ~[asm-9.1.jar:9.1] {}
at org.objectweb.asm.ClassReader.accept(ClassReader.java:478) ~[asm-9.1.jar:9.1] {}
at org.objectweb.asm.ClassReader.accept(ClassReader.java:401) ~[asm-9.1.jar:9.1] {}
at net.minecraftforge.fml.loading.moddiscovery.Scanner.fileVisitor(Scanner.java:60) ~[server.jar:?] {}
at net.minecraftforge.fml.loading.moddiscovery.Scanner.lambda$scan$0(Scanner.java:46) ~[server.jar:?] {}
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) ~[?:1.8.0_282] {}
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_282] {}
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_282] {}
at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_282] {}
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_282] {}
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[?:1.8.0_282] {}
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) ~[?:1.8.0_282] {}
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[?:1.8.0_282] {}
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[?:1.8.0_282] {}
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_282] {}
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485) ~[?:1.8.0_282] {}
at net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer$MinecraftLocator.scanFile(ModDiscoverer.java:219) ~[server.jar:?] {}
at net.minecraftforge.fml.loading.moddiscovery.ModFile.scanFile(ModFile.java:134) ~[server.jar:?] {}
at net.minecraftforge.fml.loading.moddiscovery.Scanner.scan(Scanner.java:46) ~[server.jar:?] {}
at net.minecraftforge.fml.loading.moddiscovery.ModFile.compileContent(ModFile.java:130) ~[server.jar:?] {}
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604) ~[?:1.8.0_282] {}
... 3 more
[16:06:18] [main/INFO] [cp.mo.mo.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, .]

 

I mentioned that I tried reinstalling it didn't I?

Yes, of course

Ok, I've found the problem. The server host which I am trying to start the server on requires you (for some reason) to rename your server file to server.jar. I already asked their support for a fix, I might also just rent a VPS server if they can't give me an alternative or run it from my own computer alltogether. 
Thanks for the replys anyways!