Tag Archives: Error reporting solution

[Solved] – npm run dev Error: listen EADDRINUSE: address already in use :::8000(or 8080 etc.)

today, I’d like to record that when I was implementing a project recently, I found that running NPM run dev always reported errors:
error: listen eaddinuse: address already in use::: 8000
NPM err! elm@2.0.1 dev: cross-env NODE_ Env = online node build/dev server. JS
it is found that the port is actually occupied. We can turn off the occupied port or recompile another port to solve this problem.

1.Error reported:

2. Causes and solutions of error reporting

this error occurs because the port is occupied. We can view the port through netstat - ano :

at this time, we can solve it by closing the occupied port or recompiling the code with another port.

[Solved] Error: #error More than 1 blank line not allowed no-multiple-empty-lines

Error reporting environment

After creating Vue scaffolding,

    1. Modify/SRC/app.vue to delete code we don’t need
<template>
  <div id="app">
    my_ui
  </div>
</template>

<script>


export default {

}
</script>

<style lang="scss">

</style>

Start project: NPM run serve error: error more than 1 blank line not allowed no multiple empty lines

Screenshot of error report

Error reporting translation

Error more than 1 blank line not allowed no multiple empty lines

Error reporting solution

Method 1:

According to the error prompt, find the relevant module. Here is the app. Vue
we modified earlier. Delete the redundant blank lines in it

Method 2:

Close eslint

[Solved] IDEA Start Project Error: Abnormal build process termination:Could not create the Java Virtual Machine.

Idea project startup error

Solution to error reporting during idea project startup

Idea project startup error

Abnormal build process termination: 
"C:\Program Files\Java\jdk1.8.0_161\bin\java.exe" -Xmx700m -Djava.awt.headless=true -Djava.endorsed.dirs=\"\" -Dexternal.project.config=C:\Users\wf870\AppData\Local\JetBrains\IntelliJIdea2021.2\external_build_system\sugar.ad7b8821 -Dcompile.parallel=false -Drebuild.on.dependency.change=true -Djdt.compiler.useSingleThread=true -Daether.connector.resumeDownloads=false -Dio.netty.initialSeedUniquifier=3989273803388531595 -Dfile.encoding=GBK -Duser.language=zh -Duser.country=CN -Didea.paths.selector=IntelliJIdea2021.2 "-Didea.home.path=D:\idea\IntelliJ IDEA 2021.2" -Didea.config.path=C:\Users\wf870\AppData\Roaming\JetBrains\IntelliJIdea2021.2 -Didea.plugins.path=C:\Users\wf870\AppData\Roaming\JetBrains\IntelliJIdea2021.2\plugins -Djps.log.dir=C:/Users/wf870/AppData/Local/JetBrains/IntelliJIdea2021.2/log/build-log "-Djps.fallback.jdk.home=D:/idea/IntelliJ IDEA 2021.2/jbr" -Djps.fallback.jdk.version=11.0.11 -Dio.netty.noUnsafe=true -Djava.io.tmpdir=C:/Users/wf870/AppData/Local/JetBrains/IntelliJIdea2021.2/compile-server/sugar_eaae1db7/_temp_ -Djps.backward.ref.index.builder=true -Djps.track.ap.dependencies=false --add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED -Dtmh.instrument.annotations=true -Dtmh.generate.line.numbers=true -Dkotlin.incremental.compilation=true -Dkotlin.incremental.compilation.js=true -Dkotlin.daemon.enabled -Dkotlin.daemon.client.alive.path=\"C:\Users\wf870\AppData\Local\Temp\kotlin-idea-11852903351073037841-is-running\" -classpath "D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/jps-launcher.jar;C:/Program Files/Java/jdk1.8.0_161/lib/tools.jar" org.jetbrains.jps.cmdline.Launcher "D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/maven-resolver-transport-http-1.3.3.jar;D:/idea/IntelliJ IDEA 2021.2/lib/util.jar;D:/idea/IntelliJ IDEA 2021.2/lib/platform-api.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/jps-builders-6.jar;D:/idea/IntelliJ IDEA 2021.2/lib/forms_rt.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/jps-javac-extension-1.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/jps-builders.jar;D:/idea/IntelliJ IDEA 2021.2/lib/3rd-party.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/maven-resolver-connector-basic-1.3.3.jar;D:/idea/IntelliJ IDEA 2021.2/lib/protobuf-java-3.15.8.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/aether-dependency-resolver.jar;D:/idea/IntelliJ IDEA 2021.2/lib/jna.jar;D:/idea/IntelliJ IDEA 2021.2/lib/jna-platform.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/maven-resolver-transport-file-1.3.3.jar;D:/idea/IntelliJ IDEA 2021.2/lib/kotlin-stdlib-jdk8.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/java/lib/javac2.jar;D:/idea/IntelliJ IDEA 2021.2/lib/slf4j.jar;D:/idea/IntelliJ IDEA 2021.2/lib/jps-model.jar;D:/idea/IntelliJ IDEA 2021.2/lib/annotations.jar;D:/idea/IntelliJ IDEA 2021.2/lib/idea_rt.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/JavaEE/lib/jasper-v2-rt.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Kotlin/lib/kotlin-reflect.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Kotlin/lib/kotlin-plugin.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/ant/lib/ant-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/uiDesigner/lib/jps/java-guiForms-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/eclipse/lib/eclipse-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/eclipse/lib/eclipse-common.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/IntelliLang/lib/java-langInjection-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Groovy/lib/groovy-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Groovy/lib/groovy-constants-rt.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/maven/lib/maven-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/gradle-java/lib/gradle-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/devkit/lib/devkit-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/javaFX/lib/javaFX-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/javaFX/lib/javaFX-common.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/JavaEE/lib/javaee-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/webSphereIntegration/lib/jps/javaee-appServers-websphere-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/weblogicIntegration/lib/jps/javaee-appServers-weblogic-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/JPA/lib/jps/javaee-jpa-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Grails/lib/groovy-grails-jps.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Grails/lib/groovy-grails-compilerPatch.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Kotlin/lib/jps/kotlin-jps-plugin.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Kotlin/lib/kotlin-jps-common.jar;D:/idea/IntelliJ IDEA 2021.2/plugins/Kotlin/lib/kotlin-common.jar" org.jetbrains.jps.cmdline.BuildMain 127.0.0.1 52091 2a22c86a-66f8-4710-a186-028d07a1fe2d C:/Users/wf870/AppData/Local/JetBrains/IntelliJIdea2021.2/compile-server
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Unrecognized option: --add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED

2021.2 idea project startup error:
abnormal build process termination:
error: could not create the Java virtual machine.
error: a fatal exception has occurred. Program will exit.
unrecognized option: — add opens = JDK. Compiler/com. Sun. Tools. Javac. Code = all-unnamed

Idea project startup solution

Many people on the Internet said that the JDK was not installed correctly. At first, they suspected that the JDK was not installed in the default directory, so they reinstalled it and configured the JDK environment. But still report an error. The JDK is re imported in idea again, but it still doesn’t work.

Many methods failed. Finally, it was found that the default project language level was 16 (the idea version used by bloggers was 2021), so it was changed to 8 and the error was reported.

Error reporting – the project directly introduces the error reporting and solution of. SCSS file

   in recent projects, SCSS has been directly used, and it is found that an error is reported. Up to now, I don’t know the cause, but I probably know that it is node, but the solution has been found. Let’s share:

1、 Error reporting

./src/components/alert_tip/alert_tip.scss (./node_modules/css-loader??ref--6-oneOf-5-1!./node_modules/postcss-loader/src??postcss!./node_modules/sass-loader/lib/loader.js!./src/components/alert_tip/alert_tip.scss)
Error: ENOENT: no such file or directory, scandir 'C:\Users\Administrator\Desktop\xxx\xxx\xxx\xxx\xxx-elm\node_modules\node-sass\vendor'

2、 Solution

  just run the following code directly:

	npm rebuild node-sass

hope to help you