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Table of contents

• [intellij error] Maven 3.3.1+ requires JDK 1.7+
• [jekyll] Dependency Error, Jekyll::Errors::MissingDependencyException
• [kotlin error] ClassNotFoundException: kotlin.jvm.JvmInline
• [kotlin error] cannot be invoked as a function. The function 'invoke()' is not found
• [spring error] ConflictingBeanDefinitionException: Annotation-specified bean name
• [spring error] JpaRepository NoSuchBeanDefinitionException
• [spring error] Unable to find a @SpringBootConfiguration
• [spring error] java.lang.NoClassDefFoundError: graphql/execution/batched/Batched
• [spring error] javax.websocket.server.ServerContainer not available
• [spring error] kotlin cannot be returned by findById(), findById() should return Optional
• [spring error] log4j2, Class path contains multiple SLF4J bindings
• [spring error] log4j2.yml, yaml property not work
• [spring error] repackage failed: Unable to find main class