I tried to install Lavalink on my project but I get this error about Java. How can I fix this?
2020-05-30 15:17:02.342 WARN 8504 --- [kground-preinit] o.s.h.c.j.Jackson2ObjectMapperBuilder : For Jackson Kotlin classes support please add "com.fasterxml.jackson.module:jackson-module-kotlin" to the classpath
2020-05-30 15:17:02.379 ERROR 8504 --- [ main] lavalink.server.Launcher : Application failed
java.lang.UnsupportedClassVersionError: lavalink/server/info/AppInfo has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_212]
at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_212]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_212]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468) ~[na:1.8.0_212]
at java.net.URLClassLoader.access$100(URLClassLoader.java:74) ~[na:1.8.0_212]
at java.net.URLClassLoader$1.run(URLClassLoader.java:369) ~[na:1.8.0_212]
at java.net.URLClassLoader$1.run(URLClassLoader.java:363) ~[na:1.8.0_212]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_212]
at java.net.URLClassLoader.findClass(URLClassLoader.java:362) ~[na:1.8.0_212]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_212]
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:93) ~[Lavalink.jar:na]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_212]
at lavalink.server.Launcher.getVersionInfo(Launcher.kt:50) [classes!/:na]
at lavalink.server.Launcher.getVersionInfo$default(Launcher.kt:49) [classes!/:na]
at lavalink.server.Launcher$main$1.onApplicationEvent(Launcher.kt:118) ~[classes!/:na]
at lavalink.server.Launcher$main$1.onApplicationEvent(Launcher.kt:43) ~[classes!/:na]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:342) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:305) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at lavalink.server.Launcher.main(Launcher.kt:127) [classes!/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [Lavalink.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [Lavalink.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) [Lavalink.jar:na]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) [Lavalink.jar:na]
2020-05-30 15:17:02.382 ERROR 8504 --- [ main] o.s.boot.SpringApplication : Application run failed
java.lang.UnsupportedClassVersionError: lavalink/server/info/AppInfo has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_212]
at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_212]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_212]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468) ~[na:1.8.0_212]
at java.net.URLClassLoader.access$100(URLClassLoader.java:74) ~[na:1.8.0_212]
at java.net.URLClassLoader$1.run(URLClassLoader.java:369) ~[na:1.8.0_212]
at java.net.URLClassLoader$1.run(URLClassLoader.java:363) ~[na:1.8.0_212]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_212]
at java.net.URLClassLoader.findClass(URLClassLoader.java:362) ~[na:1.8.0_212]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_212]
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:93) ~[Lavalink.jar:na]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_212]
at lavalink.server.Launcher.getVersionInfo(Launcher.kt:50) [classes!/:na]
at lavalink.server.Launcher.getVersionInfo$default(Launcher.kt:49) [classes!/:na]
at lavalink.server.Launcher$main$1.onApplicationEvent(Launcher.kt:118) ~[classes!/:na]
at lavalink.server.Launcher$main$1.onApplicationEvent(Launcher.kt:43) ~[classes!/:na]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:342) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:305) ~[spring-boot-2.1.8.RELEASE.jar!/:2.1.8.RELEASE]
at lavalink.server.Launcher.main(Launcher.kt:127) [classes!/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [Lavalink.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [Lavalink.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) [Lavalink.jar:na]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) [Lavalink.jar:na]