[Solved] IDEA Compile Error: java: Compilation failed: internal java compiler error

Compilation error: java: compilation failed: internal java compiler error

Reason: the project is too large and the memory is not enough. Increase the shared build process heap size, initially 700, now 1500

[Solved] JAVA OpenCV Startup Error: java.lang.UnsatisfiedLinkError

About using OpenCV for image processing and image recognition technology,

there are few examples involving Java.
after introducing lib and DLL according to online operations, an error Java is reported Lang.unsatisfiedlinkerror
Someone said they would add system loadLibrary(Core.NATIVE_LIBRARY_NAME); Otherwise, it will report an error java Lang.unsatisfiedlinkerror
but it still report error: java.lang.UnsatisfiedLinkError

Solution: (my operating system is windows64 bit)
Copy the downloaded dll file under opencv\build\java\x64 to C:\Windows\System32

then go to idea to start the main method, and there will be no errors.

[Solved] error when starting dev server:Error: listen EACCES: permission denied 0.0.0.0:80 at Server.set

error when starting dev server:Error: listen EACCES: permission denied 0.0.0.0:80 at Server.set

error when starting dev server:
Error: listen EACCES: permission denied 0.0.0.0:80
at Server.setupListenHandle [as _listen2] (node:net:1313:21)
at listenInCluster (node:net:1378:12)
at Server.listen (node:net:1465:7)Using cnpm install works

mac to 8090.

mac terminal port view command
View Port thread lsof -i:4700
$ lsof -i:4700
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
node 12159 yyyyyy 23u IPv4 0x76b4f5051c4983f3 0t0 TCP *:netxms-agent (LISTEN)

The PID here is the process number that occupies port 4700
kill 4700
Solution:
View mac terminal port command netstat -AaLlnW
Method 1
// Check if port 80 is occupied
sudo lsof -i :80

Method 2
netstat -anp tcp | grep 80
The following command can directly end all processes that are occupying the port.
lsof -P | grep ‘:80’ | awk ‘{print $2}’ | xargs kill -9

Ps -ef|grep program name

[Solved] error Component name “index“ should always be multi-word vue/multi-word-component-names

preface

This article mainly records the solution of Vue eslint error component name “index” should always be multi word Vue/multi word component names.

1. Reason for error reporting

Create a project using the latest Vue-cli. When NPM run serve runs the project, an error is reported, as shown in the following figure.

The reason is that the eslint-plugin-vue version has been updated, and compared to the previous version, there are many new rules in the @8 version, the first one is ‘vue/multi-word-component-names’: ‘error’, which requires component names to be named in camel format, so index.vue will report an error.

2. Solutions

Follow the rules and use camel naming, e.g. AppHeader.vue
Turn off the naming convention in the .eslintrc.js file

// .eslintrc.js
module.exports = {
  root: true,
  env: {
    node: true,
  },
  extends: [
    "plugin:vue/vue3-essential",
    "eslint:recommended",
    "@vue/typescript/recommended",
    "plugin:prettier/recommended",
  ],
  parserOptions: {
    ecmaVersion: 2020,
  },
  rules: {
    "vue/multi-word-component-names": [
      "error",
      {
        ignores: ["index"], //Component names to be ignored
      },
    ],
  },
};

[ERROR SystemVerification]: failed to parse kernel config: unable to load kernel module: “configs“

[error systemverification]: failed to parse kernel config: unable to load kernel module: “configs”.

When installing kubernetes cluster, the above error is reported.

Solution:

Method 1: ignore the error

Add the –ignore-preflight-errors=SystemVerification option to ignore the error. It is not possible to tell if other problems will occur subsequently with this option.

Method 2: Upgrade kernel version

I installed the kubernetes cluster using kernel version 4.19.12, and the problem did not occur after upgrading the kernel to 5.13.7. I am not sure if it is a kernel version problem.

Method 3:

Manually compile the config kernel module

core-js/modules/es.error.cause.js [How to Solve]

Reason: the installed version of core-js is too old and needs to be replaced with a newer version.

Solution:
1 Delete original version

 npm rm -rf node_modules

2. install the latest version

npm install core-js@latest

Note:
you cannot directly install a new version. You must first delete the original version dependency, and then install a new version to avoid errors!

[Solved] DPDK Error: insmod: ERROR: could not insert module igb_uio.ko: Invalid parameters

Load IGB_UIO modules

sudo modprobe uio
sudo insmod igb_uio. ko

Excribing errors:

insmod: ERROR: could not insert module igb_uio.ko: Invalid parameters

Solution:

First use uname -r to view the current kernel version

Use modinfo IGB_uio.ko check whether the vermagic field is consistent with the current kernel version, and find that it is inconsistent

Recompile the dpdk. After compilation, check the consistency

[Solved] KEIL Compile Error: Error: L6220E: Load region LR_IROM1 size (65552 bytes) exceeds limit (65536 bytes)……

Problem Description:

Stm32f103cbt6 keil compilation error: l6220e: load region LR_ IROM1 size (65552 bytes) exceeds limit (65536 bytes). Region contains 84 bytes of padding and 0 bytes of veneers (total 84 bytes of linker generated content).

resolvent:

Step 1

For 128K chips, modify the irom1 size to 0x20000 (in the red box below). Some versions of Keil will automatically change this location when you change the device; Some versions need to be modified manually

Step 2

Select linker → edit to open link.sct file

Modify the data after LR_IROM1 and ER_IROM1 in the file to 0x20000 (at the red box in the figure below) and save the file.

Step 3

Recompile and solve the problem

Tips

The first and second steps must be completed before compiling and testing. The first step alone may not be successful.

[Solved] vue error: error Component name “School“ should always be multi-word vue/multi-word-component-names

Error details:

error Component name “School” should always be multi-word vue/multi-word-component-names

Cause: when checking the syntax, the non-standard naming is regarded as a syntax error.

Solution: turn off syntax checking

Add the following codes in vue.config.js:

const { defineConfig } = require('@vue/cli-service')
module.exports = defineConfig({
  transpileDependencies: true,
  lintOnSave:false /*Turn off syntax checking*/
})

[Solved] ERROR in ./node_modules/element-ui/lib/theme-chalk/fonts/element-icons.ttf

Problem Description:

Error reporting of global element introduction in Vue project based on scaffold development

Install according to the official document of element

npm i element-ui -S

Import main.js and use

//Import element

import ElementUI from ‘element-ui’

import ‘element-ui/lib/theme-chalk/index. css’

Vue. use(ElementUI)

Errors are reported as follows

Vscode terminal error

Web page error

Solution:

The problem was eventually found to be that the ‘ ‘ symbol in the font file was not recognized.

The conversion needs to be done with file-loader

Add the configuration to webpack.config.js

{
        test: /\.(eot|svg|ttf|woff|woff2)(\?\S*)?$/,
        loader: 'file-loader'
}

Add location as follows

Restart, problem solved

[Solved] Vue3 Error: error Delete `··` prettier/prettier

vue3 project error: error Delete `··` prettier/prettier

Run

npm  run  lint --fix

It depends on what tool is used. If you use yarn or pnpm, you can replace it

If present

Open package.json file, and view the configuration

For example, the configuration of my project is as follows

The command to run is:

npm run lint:eslint --fix

Then restart the project

Supplement:

Found that error Delete `——–␍⏎` prettier/prettier is too much when using webstorm, and every time I modify the code, this error will appear, which is troublesome to operate. So choose to close the Prettier code specification directly
Just configure it in the rules in eslintrc.js

'prettier/prettier': 'off'

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