[21:49:53] [main/FATAL]: A critical error occurred
net.fabricmc.loader.discovery.ModResolutionException: Could not find required mod: vanish requires {minecraft @ [1.16.4]}
	at net.fabricmc.loader.discovery.ModResolver.findCompatibleSet(ModResolver.java:180) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.discovery.ModResolver.resolve(ModResolver.java:787) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.FabricLoader.setup(FabricLoader.java:211) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.FabricLoader.load(FabricLoader.java:201) [fabric-server-launch.jar:?]
	at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:126) [fabric-server-launch.jar:?]
	at net.fabricmc.loader.launch.knot.KnotServer.main(KnotServer.java:27) [fabric-server-launch.jar:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?]
	at net.fabricmc.loader.launch.server.FabricServerLauncher.launch(FabricServerLauncher.java:62) [fabric-server-launch.jar:?]
	at net.fabricmc.loader.launch.server.FabricServerLauncher.setup(FabricServerLauncher.java:106) [fabric-server-launch.jar:?]
	at net.fabricmc.loader.launch.server.FabricServerLauncher.main(FabricServerLauncher.java:50) [fabric-server-launch.jar:?]
Caused by: net.fabricmc.loader.util.sat4j.specs.ContradictionException: Creating Empty clause ?
	at net.fabricmc.loader.util.sat4j.minisat.constraints.cnf.Clauses.propagationCheck(Clauses.java:117) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.util.sat4j.minisat.constraints.cnf.Clauses.sanityCheck(Clauses.java:97) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.util.sat4j.minisat.constraints.MixedDataStructureDanielWL.createClause(MixedDataStructureDanielWL.java:81) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.util.sat4j.minisat.core.Solver.addClause(Solver.java:401) ~[fabric-server-launch.jar:?]
	at net.fabricmc.loader.discovery.ModResolver.findCompatibleSet(ModResolver.java:177) ~[fabric-server-launch.jar:?]
	... 12 more