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</noscript><div id="___gatsby"><div style="outline:none" tabindex="-1" id="gatsby-focus-wrapper"><header class="TemplateHeader-module--header--f6398 "><div class="Container-module--largeContainer--94cb8"><div class="TemplateHeader-module--wrapper--8e3ea"><a href="https://www.lightrun.com"><img 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alt="Lightrun" class="TemplateHeader-module--logoImg--5e9c4"/></a><nav class="TemplateHeader-module--navWrapper--b3c39"><div class="TemplateHeader-module--navList--a14d9"><div class="TemplateHeader-module--btnMenu--375a2"><button class="TemplateHeader-module--item--c5b2d">Dev Observability <img src="data:image/svg+xml;base64,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" alt="arrow_down"/></button><div class="SharedMenu-module--wrapperContainer--6e38e "><div class="SharedMenu-module--wrapper--49c2c"><p class="titleGradient">Dev Observability</p><div class="SharedMenu-module--menuList--d425c"><a href="https://lightrun.com/developer-observability/" class="SharedMenu-module--link--ad046">What is Developer Observability?</a><a href="https://lightrun.com/why-lightrun/" class="SharedMenu-module--link--ad046">Why Lightrun?</a><a href="https://lightrun.com/architecture/" class="SharedMenu-module--link--ad046">Lightrun Architecture</a><a href="https://lightrun.com/sdk/" class="SharedMenu-module--link--ad046"><span>The Lightrun SDK</span><sup>TM</sup></a><a href="https://lightrun.com/plugin/" class="SharedMenu-module--link--ad046">The Lightrun IDE Plugin</a><a href="https://lightrun.com/security/" class="SharedMenu-module--link--ad046">Security</a><a href="https://lightrun.com/comparisons/" class="SharedMenu-module--link--ad046">Comparisons</a><a href="https://lightrun.com/integrations/" class="SharedMenu-module--link--ad046">Integrations</a></div><div class="SharedMenu-module--arrow--d0e9b "/></div></div></div><div class="TemplateHeader-module--btnMenu--375a2"><button class="TemplateHeader-module--item--c5b2d">Product <img src="data:image/svg+xml;base64,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" alt="arrow_down"/></button><div class="SharedMenu-module--wrapperContainer--6e38e SharedMenu-module--expandedMenuContainer--4c975"><div class="SharedMenu-module--wrapper--49c2c"><div class="SharedMenu-module--productWrapper--40db0"><div><div class="titleGradient">Architectures</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div class="SharedMenu-module--menuBlock--9a914"><div class="SharedMenu-module--subTitleList--11ca1">Deployment Patterns</div><div class="SharedMenu-module--menuList--d425c"><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/kubernetes-troubleshooting/">Kubernetes Debugging</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/serverless-debugging/">Serverless Debugging</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/feature-flag-validation/">Feature Flag Debugging</a></div></div><div class="SharedMenu-module--menuBlock--9a914"><div class="SharedMenu-module--subTitleList--11ca1">Environments</div><div class="SharedMenu-module--menuList--d425c"><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/enviroments/dev-qa-staging/">Dev/QA/Staging</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/enviroments/ci-cd-pipelines/">CI/CD</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/enviroments/production/">Production</a></div></div></div></div><div><div class="titleGradient">Roles</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/roles/backend-developer/">Backend Developer</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/roles/devops-sre/">DevOps Engineer/SRE</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/roles/engineering-leader/">Engineering Leader</a></div></div></div><div><div class="titleGradient">Benefits</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/reduce-mttr/">Reduce MTTR</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/improve-developer-productivity/">Improve Dev Productivity</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/optimize-logging-costs/">Optimize Logging Costs</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/reduce-time-to-market/">Reduce Time to Market</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/improve-dora-metrics/">Improove DORA metrics</a></div></div></div><div><div class="titleGradient">Features</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/logs/">Dynamic Logs</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/metrics/">Zero-config Metrics</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/snapshots/">Snapshots (Virtual Breakpoints)</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/integrations/#">Integrations</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/integrations/#">Comparisons</a></div></div></div><div class="SharedMenu-module--watchNowBar--38120"><div class="WatchNow-module--watchNow--0a727 SharedMenu-module--watchBarPanel--43c6e"><span class="titleGradient WatchNow-module--newTitle--646e1">NEW!</span><span class="WatchNow-module--description--bb7f0">Watch our log cost reduction masterclass with Google, Shopify and the CNCF!<a href="https://lightrun.com/resources/the-hidden-cost-of-overlogging/" class="WatchNow-module--watchNowLink--22d33">Watch Now&gt;</a></span></div></div></div><div class="SharedMenu-module--arrow--d0e9b SharedMenu-module--expandedMenuArrow--4fdac"/></div></div></div><a href="https://lightrun.com/pricing" 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href="https://lightrun.com/blog/" class="MobileMenu-module--linkMenuItem--341df">Blog</a></li><li class="MobileMenu-module--navItem--99a59"><div class="MobileMenu-module--titleMenuItem--d0f06"><span>Company</span><img src="data:image/svg+xml;base64,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" alt="arrow" class="MobileMenu-module--arrow--1311d "/></div></li><li class="MobileMenu-module--navItem--99a59"><a href="https://playground.lightrun.com" class="MobileMenu-module--linkMenuItem--341df">Debug Wordle</a></li></ul><div class="MobileMenu-module--controlButtons--b6016"><ul class="ControlButtons-module--linkList--df15b"><li class="ControlButtons-module--underLine--a2f91"><a href="https://app.lightrun.com/api/oauth/login">Log in</a></li><li class="ControlButtons-module--item--da1af"><a href="https://lightrun.com/get-a-lightrun-demo/" class="ButtonLink-module--linkBtn--3a273 ButtonLink-module--transparent--5a2f9 ">Book a Demo</a></li><li class="ControlButtons-module--item--da1af"><a href="https://app.lightrun.com/api/oauth/register" class="ButtonLink-module--linkBtn--3a273 ButtonLink-module--fill--6b8b9 ">Start For Free</a></li></ul></div></div></div></div></div></header><main><div class="Hero-module--hero--e76bd"><div class="Container-module--container--052f0"><div class="Hero-module--overlay--92431"><img src="/answers/static/question-mark-6a6962885f54fa6c88cf5e38232283da.png" alt="question-mark" class="Hero-module--heroImg--8554a"/><div class="Hero-module--wrapper--29990"><h1>Stuck on an issue?</h1><p class="Hero-module--description--894ed">Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.<br/></p><p class="Hero-module--description--894ed Hero-module--strongText--4ea65">And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.</p><button class="Hero-module--btnHero--4efca">Talk to a Lightrun Answers expert</button></div></div></div></div><section class="sectionWrapper IssueSummary-module--issueSummary--29ccb"><div class="Container-module--container--052f0"><div class="IssueSummary-module--wrapper--5e867"><h2 class="IssueSummary-module--title--1229e">adb command failed with exit code null when emulate or run</h2><a href="https://github.com/ionic-team/ionic-cli/issues/922" class="IssueSummary-module--linkUnderline--4cc7f">See original GitHub issue</a></div><div class="IssueSummary-module--wrapperGrid--5ff55"><div class="IssueSummary-module--descriptionWrapper--3a1cb"><h3>Issue Description</h3><div class="LeftScrollContainer-module--wrapper--9987b IssueSummary-module--textContainer--3e705 "><div class="LeftScrollContainer-module--content--0b83d"><div><p><em>From <a href="https://github.com/swizardlv">@swizardlv</a> on April 11, 2016 1:15</em></p> <p><strong>Note: for support questions, please use one of these channels:</strong></p> <p><a href="https://forum.ionicframework.com/">https://forum.ionicframework.com/</a> <a href="http://ionicworldwide.herokuapp.com/">http://ionicworldwide.herokuapp.com/</a></p> <h4>Short description of the problem:</h4> <p>sometimes when run 'ionic emulate android ’ or ‘ionic run android’</p> <pre><code>swizard@swizarddeMacBook-Pro:~/ws/rwworks/rich_mobile &gt;ionic emulate android Running command: /Users/swizard/ws/rwworks/rich_mobile/hooks/after_prepare/010_add_platform_class.js /Users/swizard/ws/rwworks/rich_mobile add to body class: platform-android ANDROID_HOME=/Users/swizard/Documents/dev/android-sdk-macosx JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_66.jdk/Contents/Home Error: adb: Command failed with exit code null <p>it can be fixed only restart the system.</p> <h4>What behavior are you expecting?</h4> <p>the ionic emulate and run can be called successfully.</p> <p><strong>Steps to reproduce:</strong> no steps to reproduce.</p> <p>Where can I find the debug information?</p> <pre><code>insert any relevant code between the above and below backticks <p><strong>Other information:</strong> (e.g. stacktraces, related issues, suggestions how to fix, stackoverflow links, forum links, etc)</p> <p><strong>Which Ionic Version?</strong> 1.x</p> <h4>Plunker that shows an example of your issue</h4> <p><strong>For Ionic 1 issues</strong> - <a href="http://plnkr.co/edit/jnOrQRtE8rN2WCXDQYQY?p=info">http://plnkr.co/edit/jnOrQRtE8rN2WCXDQYQY?p=info</a></p> <p><strong>For Ionic 2 issues</strong> - <a href="http://plnkr.co/edit/TW20lftdc5s622pcJPkp?p=info">http://plnkr.co/edit/TW20lftdc5s622pcJPkp?p=info</a></p> <p><strong>Run <code>ionic info</code> from terminal/cmd prompt:</strong> (paste output below)</p> <pre><code>&gt; ionic info Your system information: Cordova CLI: 6.0.0 Gulp version: CLI version 3.9.0 Gulp local: Local version 3.9.1 Ionic Version: 1.2.4 Ionic CLI Version: 1.7.14 Ionic App Lib Version: 0.7.0 ios-deploy version: 1.8.5 ios-sim version: 5.0.6 OS: Mac OS X El Capitan Node Version: v5.2.0 Xcode version: Xcode 7.2.1 Build version 7C1002