Errors thrown when starting jbr_jcef-17.0.7 Minecraft Paper server. #490
Comments
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have you managed to solve the issue? I'm encountering same issue on the latest hotswap agent |
I did manage to fix by disabling log4j in jvm args. I think one of threads I found in stackoverflow worked. can't recall what it was. however I'm not using it anymore but rather just using remote jvm feature in intelliJ. It's built in and works well. |
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Hotswap itself does not work either |
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The AgentLogger issue (at least on debugging Minecraft plugins) can be "fixed" by disabling the Proxy plugin.
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I just recompiled the hotswap agent with all the stuff I don't need removed and it does work now, with zero issues. |
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I faced the same thing as you guys. I explained in my videos that only core, not fatjar works for me. Use core. This was specifically how I set it up for Paper: https://youtu.be/yQVLT6sDg68 |
When I run my Debug Run Configuration that starts my Minecraft 1.20.1 Paper server using the JBR17.0.7 environment detailed below, I am met with a stacktrace in my terminal shortly after the configuration starts to boot my server. I have nothing within my project apart from a main class with very little functionality. It appears as though everything starts correctly, and it doesn't impede anything, but I'd rather have a clean terminal with my startup information displayed as opposed to a daunting stacktrace sitting above the pertinent details I'm looking for. It appears as though entirely disabling the log4j2 plugin resolves the errors on startup, but I'd still like to understand why this is the case, and if there is a better solution other than omitting the plugin entirely. I'm not actively using the log4j2 for my project, but I assume it's being used somewhere within the PaperAPI. I believe log4j (unsure if log4j2) is used by PaperMC to handle their logging implementation.
EDIT 1: Paper uses a custom classloader, and I'm assuming that this may have something to do with this issue. Explicitly setting the javaagent doesn't resolve my issue. I'm unsure as to whether or not the classloader is to blame here, or whether it's something the PaperMC developers are doing with their implementation of log4j2, or if it's something else entirely. I will continue to research and keep this issue updated with relevant information regarding my findings and continued testing/debugging.
--Environment Specific Details--
JRE: JBR_JCEF-17.0.7
HotswapAgent: 1.4.2 (Pre-Release)
Gradle: 1.8.2
IntelliJ IDEA Ultimate: 2023.2
Paper-API: 1.20.1
-----------VM Arguments-------------
-Xlog:redefine+class*=info
-XX:+AllowEnhancedClassRedefinition
-XX:HotswapAgent=fatjar
-Xms10G
-Xmx10G
-XX:+UseG1GC
-XX:+ParallelRefProcEnabled
-XX:MaxGCPauseMillis=200
-XX:+UnlockExperimentalVMOptions
-XX:+DisableExplicitGC
-XX:+AlwaysPreTouch
-XX:G1NewSizePercent=30
-XX:G1MaxNewSizePercent=40
-XX:G1HeapRegionSize=8M
-XX:G1ReservePercent=20
-XX:G1HeapWastePercent=5
-XX:G1MixedGCCountTarget=4
-XX:InitiatingHeapOccupancyPercent=15
-XX:G1MixedGCLiveThresholdPercent=90
-XX:G1RSetUpdatingPauseTimePercent=5
-XX:SurvivorRatio=32
-XX:+PerfDisableSharedMem
-XX:MaxTenuringThreshold=1
-Dusing.aikars.flags=https://mcflags.emc.gs
-Daikars.new.flags=true
----Stacktrace---------
Connected to the target VM, address: '127.0.0.1:55781', transport: 'socket'
HOTSWAP AGENT: 12:27:39.372 INFO (org.hotswap.agent.HotswapAgent) - Loading Hotswap agent {1.4.2-SNAPSHOT} - unlimited runtime class redefinition.
HOTSWAP AGENT: 12:27:39.562 INFO (org.hotswap.agent.config.PluginRegistry) - Discovered plugins: [Hotswapper, WatchResources, AnonymousClassPatch, ClassInitPlugin, JdkPlugin, Hibernate, HibernateJakarta, Hibernate3JPA, Hibernate3, Spring, Jersey1, Jersey2, Jetty, Tomcat, ZK, Logback, Log4j2, MyFaces, Mojarra, Omnifaces, ELResolver, WildFlyELResolver, OsgiEquinox, Owb, OwbJakarta, Proxy, WebObjects, Weld, WeldJakarta, JBossModules, ResteasyRegistry, Deltaspike, GlassFish, Weblogic, Vaadin, Wicket, CxfJAXRS, FreeMarker, Undertow, MyBatis, IBatis, JacksonPlugin, Idea, Thymeleaf, Velocity]
Starting HotswapAgent 'C:\Program Files\Java\jbr_jcef-17.0.7-windows-x64-b1000.6\lib\hotswap\hotswap-agent.jar'
Starting org.bukkit.craftbukkit.Main
HOTSWAP AGENT: 12:27:40.329 ERROR (org.hotswap.agent.annotation.handler.PluginClassFileTransformer) - InvocationTargetException in transform method on plugin 'class org.hotswap.agent.plugin.log4j2.Log4j2Plugin' class 'org/apache/logging/log4j/core/LoggerContext'.
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 org.hotswap.agent.annotation.handler.PluginClassFileTransformer.transform(PluginClassFileTransformer.java:220)
at org.hotswap.agent.annotation.handler.PluginClassFileTransformer.transform(PluginClassFileTransformer.java:112)
at org.hotswap.agent.util.HotswapTransformer.transform(HotswapTransformer.java:250)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:244)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:541)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524)
at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427)
at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:375)
at org.bukkit.craftbukkit.Main.tryPreloadClass(Main.java:373)
at org.bukkit.craftbukkit.Main.tryPreloadClass(Main.java:369)
at org.bukkit.craftbukkit.Main.main(Main.java:197)
at io.papermc.paperclip.Paperclip.lambda$main$0(Paperclip.java:42)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: org.hotswap.agent.javassist.CannotCompileException: [source error] no such class: org.hotswap.agent.config.PluginManager
at org.hotswap.agent.javassist.CtBehavior.insertAfter(CtBehavior.java:909)
at org.hotswap.agent.javassist.CtBehavior.insertAfter(CtBehavior.java:824)
at org.hotswap.agent.plugin.log4j2.Log4j2Plugin.registerConfigurator(Log4j2Plugin.java:154)
... 27 more
Caused by: compile error: no such class: org.hotswap.agent.config.PluginManager
at org.hotswap.agent.javassist.compiler.MemberResolver.searchImports(MemberResolver.java:479)
at org.hotswap.agent.javassist.compiler.MemberResolver.lookupClass(MemberResolver.java:422)
at org.hotswap.agent.javassist.compiler.MemberResolver.lookupClassByJvmName(MemberResolver.java:329)
at org.hotswap.agent.javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:711)
at org.hotswap.agent.javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:170)
at org.hotswap.agent.javassist.compiler.ast.CallExpr.accept(CallExpr.java:49)
at org.hotswap.agent.javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:693)
at org.hotswap.agent.javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:170)
at org.hotswap.agent.javassist.compiler.ast.CallExpr.accept(CallExpr.java:49)
at org.hotswap.agent.javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:693)
at org.hotswap.agent.javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:170)
at org.hotswap.agent.javassist.compiler.ast.CallExpr.accept(CallExpr.java:49)
at org.hotswap.agent.javassist.compiler.CodeGen.doTypeCheck(CodeGen.java:266)
at org.hotswap.agent.javassist.compiler.CodeGen.atStmnt(CodeGen.java:360)
at org.hotswap.agent.javassist.compiler.ast.Stmnt.accept(Stmnt.java:53)
at org.hotswap.agent.javassist.compiler.Javac.compileStmnt(Javac.java:578)
at org.hotswap.agent.javassist.CtBehavior.insertAfterAdvice(CtBehavior.java:931)
at org.hotswap.agent.javassist.CtBehavior.insertAfter(CtBehavior.java:883)
... 29 more
System Info: Java 17 (OpenJDK 64-Bit Server VM 17.0.7+7-b1000.6) Host: Windows 11 10.0 (amd64)
Loading libraries, please wait...
2023-07-29 21:55:38,137 ServerMain WARN Advanced terminal features are not available in this environment
[21:55:42 INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[21:55:43 INFO]: Loaded 7 recipes
[21:55:43 INFO]: Starting minecraft server version 1.20.1
[21:55:43 INFO]: Loading properties
[21:55:43 INFO]: This server is running Paper version git-Paper-95 (MC: 1.20.1) (Implementing API version 1.20.1-R0.1-SNAPSHOT) (Git: aa93dcf)
[21:55:43 INFO]: Server Ping Player Sample Count: 12
[21:55:43 INFO]: Using 4 threads for Netty based IO
[21:55:44 WARN]: [!] The timings profiler has been enabled but has been scheduled for removal from Paper in the future.
We recommend installing the spark profiler as a replacement: https://spark.lucko.me/
For more information please visit: PaperMC/Paper#8948
[21:55:44 INFO]: [ChunkTaskScheduler] Chunk system is using 1 I/O threads, 5 worker threads, and gen parallelism of 5 threads
[21:55:44 INFO]: Default game type: SURVIVAL
[21:55:44 INFO]: Generating keypair
[21:55:44 INFO]: Starting Minecraft server on *:25565
[21:55:44 INFO]: Using default channel type
[21:55:44 INFO]: Paper: Using Java compression from Velocity.
[21:55:44 INFO]: Paper: Using Java cipher from Velocity.
[21:55:44 INFO]: [RemindMe] Loading server plugin RemindMe v1.0-SNAPSHOT
[21:55:44 INFO]: Server permissions file permissions.yml is empty, ignoring it
[21:55:44 INFO]: [RemindMe] Enabling RemindMe v1.0-SNAPSHOT
[21:55:44 INFO]: Preparing level "world"
[21:55:45 INFO]: Preparing start region for dimension minecraft:overworld
[21:55:45 INFO]: Time elapsed: 183 ms
[21:55:45 INFO]: Preparing start region for dimension minecraft:the_nether
[21:55:45 INFO]: Time elapsed: 13 ms
[21:55:45 INFO]: Preparing start region for dimension minecraft:the_end
[21:55:45 INFO]: Time elapsed: 10 ms
[21:55:45 INFO]: Running delayed init tasks
[21:55:45 INFO]: Done (1.602s)! For help, type "help"
[21:55:45 INFO]: Timings Reset
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