My plugin has library "org.slf4j" and SkinsRestorer has the same library. When I enable both plugins it throws an exception: Spoiler: Exception 15:55:21 [WARNING] Exception encountered when loading plugin: MotdManager java.lang.LinkageError: loader constraint violation: when resolving method "org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;" the class loader (instance of net/md_5/bungee/api/plugin/PluginClassloader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of net/md_5/bungee/api/plugin/PluginClassloader) for the method's defining class, org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type org/slf4j/ILoggerFactory used in the signature at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:299) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:269) at redis.clients.jedis.HostAndPort.<clinit>(HostAndPort.java:12) at redis.clients.jedis.JedisFactory.<init>(JedisFactory.java:43) at redis.clients.jedis.JedisFactory.<init>(JedisFactory.java:35) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:181) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:145) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:127) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:76) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:110) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:93) at redis.clients.jedis.JedisPool.<init>(JedisPool.java:26) at pl.mnekos.motd.data.YAMLMotdDataLoader.getJedisPool(YAMLMotdDataLoader.java:63) at pl.mnekos.motd.MotdManagerPlugin.onEnable(MotdManagerPlugin.java:47) at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:250) at net.md_5.bungee.BungeeCord.start(BungeeCord.java:280) at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:62) at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15) How can I fix it?
Here is an example pom.xml section for shading in the ASM library: Code (Text): <!-- Plugins --> <plugins> <!-- Needed for shading in ASM, performing relocations --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.0</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <shadedArtifactAttached>true</shadedArtifactAttached> <createDependencyReducedPom>false</createDependencyReducedPom> <relocations> <relocation> <pattern>org.objectweb.asm</pattern> <shadedPattern>com.bergerkiller.mountiplex.dep.org.objectweb.asm</shadedPattern> </relocation> </relocations> <artifactSet> <includes> <include>org.ow2.asm</include> </includes> </artifactSet> </configuration> </execution> </executions> </plugin> This relocates the path of the library, 'org.objectweb.asm', to be located at 'com.bergerkiller.mountiplex.dep.org.objectweb.asm' instead. You can add this to the <configuration> section to also exclude portions of the library your plugin isnt using, to reduce the size of the final jar: Code (Text): <minimizeJar>true</minimizeJar>
