This mod could only be loaded with fabric-loader 0.12.0+, but in metadata its dependency includes "fabricloader": ">=0.11.3", which is not accurate.
By the way, some 1.16.5 mods (at least those I'm using) are out-of-date and don't support fabric-loader 0.12.x, updating to 0.12.x will cause lots of errors that I'm not able to handle.
2022-01-10 12:24:47,991 main ERROR Error processing element Queue ([Appenders: null]): CLASS_NOT_FOUND
2022-01-10 12:24:48,001 main WARN JNDI lookup class is not available because this JRE does not support JNDI. JNDI string lookups will not be available, continuing configuration. Ignoring java.lang.ClassCastException: class org.apache.logging.log4j.core.lookup.JndiLookup
[12:24:48] [main/INFO]: Loading for game Minecraft 1.16.5
[12:24:48] [main/INFO]: [FabricLoader] Loading 4 mods:
- [email protected]
- [email protected]
- java@11
- [email protected]
[12:24:48] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.2 Source=file:/D:/%e6%b8%b8%e6%88%8f/MC/TestEnv/.minecraft/libraries/net/fabricmc/sponge-mixin/0.9.4+mixin.0.8.2/sponge-mixin-0.9.4+mixin.0.8.2.jar Service=Knot/Fabric Env=CLIENT
Exception in thread "main" java.lang.RuntimeException: Could not execute entrypoint stage 'preLaunch' due to errors, provided by 'chatlagfix'!
at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:50)
at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke(EntrypointUtils.java:33)
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:143)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28)
Caused by: java.lang.NoClassDefFoundError: net/fabricmc/loader/impl/util/UrlConversionException
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398)
at net.fabricmc.loader.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:50)
at net.fabricmc.loader.EntrypointStorage$NewEntry.lambda$getOrCreate$0(EntrypointStorage.java:106)
at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133)
at net.fabricmc.loader.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:104)
at net.fabricmc.loader.EntrypointStorage.lambda$getEntrypointContainers$1(EntrypointStorage.java:191)
at net.fabricmc.loader.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:37)
at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:47)
... 3 more
Caused by: java.lang.ClassNotFoundException: net.fabricmc.loader.impl.util.UrlConversionException
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:175)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 12 more