[Solved] Spring Boot Error: Failed to instantiate SLF4J LoggerFactory Reported exception:

The following error occurs with Spring Boot.

Failed to instantiate SLF4J LoggerFactory Reported exception:

Failed to instantiate SLF4J LoggerFactory Reported exception: java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150) at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124) at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:273) at org.springframework.boot.SpringApplication.(SpringApplication.java:189) at hello.HelloWorldConfiguration.main(HelloWorldConfiguration.java:11) Caused by: java.lang.ClassNotFoundException: ch.qos.logback.core.joran.spi.JoranException at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) … 9 more Exception in thread “main” java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150) at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124) at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:273) at org.springframework.boot.SpringApplication.(SpringApplication.java:189) at hello.HelloWorldConfiguration.main(HelloWorldConfiguration.java:11) Caused by: java.lang.ClassNotFoundException: ch.qos.logback.core.joran.spi.JoranException at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) … 9 more

Solution:

The following dependencies need to be added.

<dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-core</artifactId>
   <version>${logback.version}</version>
</dependency>

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