--- title: "Han Jung (@jungster-han) | Hashnode" description: "Dev. Read the latest articles by Han Jung on Hashnode." url: "https://hashnode.com/@jungster-han" --- @jungster-han # Han Jung @jungster-han · Washington, DC · Joined February 2022 Dev [Website](https://www.gobistudio.co/) ### [ariadne ver 0.22 and cannot import name 'PLAYGROUND\_HTML' from 'ariadne.constants'](https://jungsterhan.hashnode.dev/ariadne-ver-022-and-cannot-import-name-playgroundhtml-from-ariadneconstants?utm_source=hashnode&utm_medium=feed) PLAYGROUND\_HTML is no longer available in ariadne version 0.22. There is an alternative you can use however. 1 min read · [jungsterhan.hashnode.dev](https://jungsterhan.hashnode.dev/ariadne-ver-022-and-cannot-import-name-playgroundhtml-from-ariadneconstants?utm_source=hashnode&utm_medium=feed) [Feb 24, 2024](https://hashnode.com/posts/ariadne-ver-022-and-cannot-import-name-playgroundhtml-from-ariadneconstants/65d98d0291ead6252b7e6d9d) ### [Setting up Jenkins pipeline for Maven project](https://jungsterhan.hashnode.dev/setting-up-jenkins-pipeline-for-maven-project?utm_source=hashnode&utm_medium=feed) I'll be sharing my experience setting up Jenkins pipeline and solutions to the problems I faced. Below is the general pipeline script: pipeline { agent any environment { GIT\_URL="ssh://your\_github\_repo.git" } stages { ... 1 min read · [jungsterhan.hashnode.dev](https://jungsterhan.hashnode.dev/setting-up-jenkins-pipeline-for-maven-project?utm_source=hashnode&utm_medium=feed) [Feb 14, 2024](https://hashnode.com/posts/setting-up-jenkins-pipeline-for-maven-project/65cce41a403c717944fa3191) ### [NVM install, changing Python version for Node.js configure](https://jungsterhan.hashnode.dev/nvm-install-changing-python-version-for-nodejs-configure?utm_source=hashnode&utm_medium=feed) When your global python version is too high. Install lower or higher version of python and set global default 1 min read · [jungsterhan.hashnode.dev](https://jungsterhan.hashnode.dev/nvm-install-changing-python-version-for-nodejs-configure?utm_source=hashnode&utm_medium=feed) [Jun 20, 2023](https://hashnode.com/posts/nvm-install-changing-python-version-for-nodejs-configure/6491e5a09d5fc3a391db3db3)