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    Expert tip

    You need to add httpcore to your dependencies. Try adding version 4.3 or further.

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    A required library class, Doclet, is not loaded. It's usually found in tools.jar in the JDK so make sure to add it (tools.jar) to your project's build path.

Solutions on the web

via GitHub by sdutry
, 1 year ago
Failed to execute goal org.apache.maven.plugins:maven-compiler-p lugin:3.3:compile (default-compile) on project struts2-bootstrap-plugin: Fatal error compiling
via GitHub by vtresoldi
, 1 year ago
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project kettle-sdk-database-plugin: Fatal error compiling
via GitHub by tandon-aman
, 2 years ago
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project gcviewer: Fatal error compiling
via GitHub by jefferyyuan
, 2 years ago
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project code-quality-simple: Fatal error compiling
via Google Groups by Unknown author, 1 year ago
Failed to execute goal org.apache.maven.plugins:maven-co mpiler-plugin:3.3:compile (default-compile) on project open-bidder-bench: Fatal error compiling
via Ecosystem JIRA by Andrew Swan, 1 month ago
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project jira-transition-triggers-plugin: Fatal error compiling
java.lang.ClassNotFoundException: org.apache.log4j.Priority	at java.net.URLClassLoader$1.run(URLClassLoader.java:372)	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:360)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at freemarker.log.Log4JLoggerFactory.getLogger(Log4JLoggerFactory.java:65)	at freemarker.log.Logger.getLogger(Logger.java:255)	at freemarker.template.utility.SecurityUtilities.(SecurityUtilities.java:67)	at freemarker.ext.beans.BeansWrapper.(BeansWrapper.java:146)	at freemarker.template.ObjectWrapper.(ObjectWrapper.java:69)	at freemarker.core.Configurable.(Configurable.java:132)	at freemarker.template.Configuration.(Configuration.java:109)	at freemarker.template.Configuration.(Configuration.java:96)	at org.apache.struts.annotations.taglib.apt.TagAnnotationProcessor.saveTemplates(TagAnnotationProcessor.java:247)	at org.apache.struts.annotations.taglib.apt.TagAnnotationProcessor.process(TagAnnotationProcessor.java:160)	at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)	at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)	at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)	at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)	at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)	at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)	at com.sun.tools.javac.main.Main.compile(Main.java:523)	at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)	at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)	at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:125)	at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:169)	at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:825)	at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129)	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)	at org.apache.maven.cli.MavenCli.main(MavenCli.java:157)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:483)	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)