# Lỗi và Giải Pháp # DISPLAY và DNS puppeteer trên vagrant virtualbox Lỗi thường gặp: - **Missing X server or $DISPLAY** - **Unable to open X display** - **Could not find Chrome (ver....)** ``` npm install puppeteer sudo apt-get install libnss3-dev sudo apt-get install -y gconf-service libasound2 libatk1.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget libgbm-dev sudo apt-get install -y xvfb sudo apt-get -y install xorg xvfb gtk2-engines-pixbuf sudo apt-get -y install dbus-x11 xfonts-base xfonts-100dpi xfonts-75dpi xfonts-cyrillic xfonts-scalable sudo apt-get -y install imagemagick x11-apps Xvfb -ac :99 -screen 0 1280x1024x16 & export DISPLAY=:99 ``` ### Lỗi DNS error: - **ERR! code EAI\_AGAIN** - **ERR! request to https://registry.npmjs.org/puppeteer failed, reason: getaddrinfo EAI\_AGAIN registry.npmjs.org** ``` npm config rm proxy npm config rm https-proxy --tried removing npm proxy sudo vi /etc/resolv.conf ``` Điền thêm dns name resolver vào, bên dưới nameserver đầu tiên: ``` nameserver 127.0.0.53 nameserver 192.168.1.11 options edns0 trust-ad ``` Ref: [https://stackoverflow.com/questions/60304251/unable-to-open-x-display-when-trying-to-run-google-chrome-on-centos-rhel-7-5](https://stackoverflow.com/questions/60304251/unable-to-open-x-display-when-trying-to-run-google-chrome-on-centos-rhel-7-5) # Yarn Command vs NPM Command Use the following command : ``` yarn add [package_name] ``` ## Comparing npm and Yarn Commands **Install dependencies** ``` npm install => yarn ``` **Install a package** ``` npm install [package_name] => yarn add [package_name] ``` **Install a package globally** ``` npm install -g [package_name] => yarn global add [package_name] ``` **Install a package as a development dependency** ``` npm install --save-dev [package_name] => yarn add --dev [package_name] ``` **Uninstall a package** ``` npm uninstall [package_name] => yarn remove [package_name] ``` **Uninstall a package globally** ``` npm uninstall -g [package_name] => yarn global remove [package_name] ``` **Uninstall a development dependency package** ``` npm uninstall --save-dev [package_name] => yarn remove [package_name] ``` **Update the dependencies** ``` npm update => yarn upgrade ``` **Update a package** ``` npm update [package_name] => yarn upgrade [package_name] ``` **Create a new package** ``` npm init => yarn init ``` **Run a script defined in the package.json** ``` npm run => yarn run ``` **Test a package** ``` npm test => yarn test ``` **Publish a package** ``` npm publish => yarn publish ``` **Remove all data from the cache** ``` npm cache clean => yarn cache clean ```
# Error while loading shared libraries: libnss3.so Lỗi này thường xuất hiện khi bạn cài puppeteer trên ubuntu mới. Thử command sau đây ``` sudo apt-get install libasound2 ``` Không được thì thử cái này: ``` sudo apt install libgconf-2-4 libatk1.0-0 libatk-bridge2.0-0 libgdk-pixbuf2.0-0 libgtk-3-0 libgbm-dev libnss3-dev libxss-dev ```