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class="nav-item"><a class="nav-link" href="https://api.dart.dev" target="_blank" rel="noopener"><div><span>API reference</span><span class="material-symbols" aria-hidden="true">open_in_new</span></div></a></li><li class="nav-item"><a class="nav-link" href="https://medium.com/dartlang" target="_blank" rel="noopener"><div><span>Blog</span><span class="material-symbols" aria-hidden="true">open_in_new</span></div></a></li><li class="nav-item"><a class="nav-link" href="https://dartpad.dev" target="_blank" rel="noopener"><div><span>DartPad (online editor)</span><span class="material-symbols" aria-hidden="true">open_in_new</span></div></a></li><li class="nav-item"><a class="nav-link" href="https://flutter.dev" target="_blank" rel="noopener"><div><span>Flutter</span><span class="material-symbols" aria-hidden="true">open_in_new</span></div></a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev" target="_blank" rel="noopener"><div><span>Package site</span><span class="material-symbols" aria-hidden="true">open_in_new</span></div></a></li></ul></li></ul></div><main id="page-content"><div id="site-toc--side" class="site-toc"><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry nav-item"><a class="nav-link" href="#pub-publish-403">Getting a "403" error when publishing a package</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#pub-publish-unauthorized">Getting an "UnauthorizedAccess" error when publishing a package</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#pub-get-fails">Pub build fails with HttpException error</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#pub-get-fails-from-behind-a-corporate-firewall">Pub get fails from behind a corporate firewall</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#localhost-unreachable-after-sign-in">Localhost unreachable after sign-in</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#pub-get-socket-error">Getting a socket error trying to find a package</a></li></ul></div><article><div class="content"><div id="site-content-title"><h1>Troubleshooting pub</h1></div><div id="site-toc--inline" class="site-toc"><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry"><a href="#pub-publish-403">Getting a "403" error when publishing a package</a></li><li class="toc-entry"><a href="#pub-publish-unauthorized">Getting an "UnauthorizedAccess" error when publishing a package</a></li><li class="toc-entry"><a href="#pub-get-fails">Pub build fails with HttpException error</a></li><li class="toc-entry"><a href="#pub-get-fails-from-behind-a-corporate-firewall">Pub get fails from behind a corporate firewall</a></li><li class="toc-entry"><a href="#localhost-unreachable-after-sign-in">Localhost unreachable after sign-in</a></li><li class="toc-entry"><a href="#pub-get-socket-error">Getting a socket error trying to find a package</a></li></ul></div><div class="header-wrapper"><h2 id="pub-publish-403">Getting a "403" error when publishing a package</h2><a class="heading-link" href="#pub-publish-403" aria-label="Link to 'Getting a "403" error when publishing a package' section">#</a></div><p>You receive the following error when running <code>pub publish</code>:</p><div class="code-block-wrapper language-plaintext"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span>HTTP error 403: Forbidden</span></span> <span class="line"><span>...</span></span> <span class="line"><span>You aren't an uploader for package '<foo>'</span></span></code></pre></div></div><p>This problem can occur if one of your accounts was granted permission to publish a package, but the pub client registers you with another account.</p><p>You can reset pub's authentication process by deleting the pub credentials file:</p><div class="header-wrapper"><h4 id="pub-credentials-linux">Linux</h4><a class="heading-link" href="#pub-credentials-linux" aria-label="Link to 'Linux' section">#</a></div><p>If <code>$XDG_CONFIG_HOME</code> is defined:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ rm $XDG_CONFIG_HOME/dart/pub-credentials.json</span></span></code></pre></div></div><p>Otherwise:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ rm $HOME/.config/dart/pub-credentials.json</span></span></code></pre></div></div><div class="header-wrapper"><h4 id="pub-credentials-mac">macOS</h4><a class="heading-link" href="#pub-credentials-mac" aria-label="Link to 'macOS' section">#</a></div><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ rm $HOME/Library/Application Support/dart/pub-credentials.json</span></span></code></pre></div></div><div class="header-wrapper"><h4 id="pub-credentials-windows">Windows</h4><a class="heading-link" href="#pub-credentials-windows" aria-label="Link to 'Windows' section">#</a></div><p>If you're using Command Prompt:</p><div class="code-block-wrapper language-cmd"><div class="code-block-body"><span class="code-block-language" title="Language cmd">cmd</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ del </span><span style="color:#11796D">"%APPDATA%\dart\pub-credentials.json"</span></span></code></pre></div></div><p>If you're using PowerShell:</p><div class="code-block-wrapper language-ps"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ </span><span style="color:#6200EE">Remove-Item</span><span style="color:#222222"> -Path </span><span style="color:#11796D">"%APPDATA%\dart\pub-credentials.json"</span></span></code></pre></div></div><aside class="alert alert-info"><div class="alert-header"><span class="material-symbols" aria-hidden="true">merge_type</span> <span>Version note</span></div><div class="alert-content"><p>In Dart 2.14 or earlier, you should instead delete the <code>credentials.json</code> file found in the <a href="/tools/pub/environment-variables"><code>PUB_CACHE</code></a> folder.</p></div></aside><div class="header-wrapper"><h2 id="pub-publish-unauthorized">Getting an "UnauthorizedAccess" error when publishing a package</h2><a class="heading-link" href="#pub-publish-unauthorized" aria-label="Link to 'Getting an "UnauthorizedAccess" error when publishing a package' section">#</a></div><p>You receive the following error when running <code>pub publish</code>:</p><div class="code-block-wrapper language-plaintext"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span>UnauthorizedAccess: Unauthorized user: <username> is not allowed to upload versions to package '<foo>'.</span></span></code></pre></div></div><p>You will see this message if you are not on the list of people authorized to publish new versions of a package. See <a href="/tools/pub/publishing#uploaders">Uploaders</a>.</p><div class="header-wrapper"><h2 id="pub-get-fails">Pub build fails with HttpException error</h2><a class="heading-link" href="#pub-get-fails" aria-label="Link to 'Pub build fails with HttpException error' section">#</a></div><p>You receive an HttpException error similar to the following when running <code>pub build</code>:</p><div class="code-block-wrapper language-plaintext"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span>Pub build failed, [1] IsolateSpawnException: 'HttpException: Connection closed while receiving data,</span></span> <span class="line"><span>...</span></span> <span class="line"><span>library handler failed</span></span> <span class="line"><span>...</span></span></code></pre></div></div><p>This can happen as a result of some antivirus software, such as the AVG 2013 Internet security suite. Check the manual for your security suite to see how to temporarily disable this feature. For example, see <a href="https://support.avg.com/SupportArticleView?urlName=How-to-disable-AVG">How to Disable AVG Components</a>.</p><div class="header-wrapper"><h2 id="pub-get-fails-from-behind-a-corporate-firewall">Pub get fails from behind a corporate firewall</h2><a class="heading-link" href="#pub-get-fails-from-behind-a-corporate-firewall" aria-label="Link to 'Pub get fails from behind a corporate firewall' section">#</a></div><p>From the command line, pub honors the <code>http_proxy</code> and <code>https_proxy</code> environment variables. You can set the proxy server environment variable as follows.</p><p>On Linux/macOS:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ </span><span style="color:#D43324">export</span><span style="color:#222222"> https_proxy=hostname:port</span></span></code></pre></div></div><p>On Windows Command Prompt:</p><div class="code-block-wrapper language-cmd"><div class="code-block-body"><span class="code-block-language" title="Language cmd">cmd</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$</span><span style="color:#D43324"> set </span><span style="color:#222222">https_proxy=hostname:port</span></span></code></pre></div></div><p>On Windows PowerShell:</p><div class="code-block-wrapper language-ps"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ $Env:https_proxy=</span><span style="color:#11796D">"hostname:port"</span></span></code></pre></div></div><p>If the proxy requires credentials, you can set them as follows.</p><p>On Linux/macOS:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ </span><span style="color:#D43324">export</span><span style="color:#222222"> https_proxy=username:password@hostname:port</span></span></code></pre></div></div><p>On Windows Command Prompt:</p><div class="code-block-wrapper language-cmd"><div class="code-block-body"><span class="code-block-language" title="Language cmd">cmd</span><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$</span><span style="color:#D43324"> set </span><span style="color:#222222">https_proxy=username:password@hostname:port</span></span></code></pre></div></div><p>On Windows PowerShell:</p><div class="code-block-wrapper language-ps"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ $Env:https_proxy=</span><span style="color:#11796D">"username:password@hostname:port"</span></span></code></pre></div></div><div class="header-wrapper"><h2 id="localhost-unreachable-after-sign-in">Localhost unreachable after sign-in</h2><a class="heading-link" href="#localhost-unreachable-after-sign-in" aria-label="Link to 'Localhost unreachable after sign-in' section">#</a></div><p>When you run <code>dart pub publish</code> in a container or over an SSH session, the <code>localhost</code> that <code>dart pub</code> is listening to might be different from the <code>localhost</code> that's accessible in your browser. Although you can sign in using the browser, the browser then complains that <code>http://localhost:<port>?code=...</code> is not reachable.</p><p>Try this workaround, which uses the command line to complete sign-in:</p><ol><li><p>In a terminal window, run <code>dart pub publish</code>.</p></li><li><p>In the browser window that comes up, sign in.<br>The browser is redirected to a <em>new localhost URL</em> (<code>http://localhost:<port>?code=...</code>) but complains that the URL isn't reachable.</p></li><li><p>Copy the <em>new localhost URL</em> from the browser.</p></li><li><p>In another terminal window in the same container or on the same host as the one where <code>dart pub publish</code> was called, use the <code>curl</code> command to complete sign-in using the <em>new localhost URL</em>:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ curl </span><span style="color:#11796D">'http://localhost:<port>?code=...'</span></span></code></pre></div></div></li></ol><div class="header-wrapper"><h2 id="pub-get-socket-error">Getting a socket error trying to find a package</h2><a class="heading-link" href="#pub-get-socket-error" aria-label="Link to 'Getting a socket error trying to find a package' section">#</a></div><p>The following error might occur if you have no internet access, your ISP is blocking <code>pub.dev</code>, or security software is blocking internet access from <code>dart</code>.</p><div class="code-block-wrapper language-plaintext"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span>Got socket error trying to find package ... at https://pub.dev.</span></span> <span class="line"><span>pub get failed (server unavailable) -- attempting retry 1 in 1 second...</span></span></code></pre></div></div><p>Check your internet connection, and verify that you don't have a firewall or other security software that blocks internet access from <code>dart</code>.</p><details><summary><b>Detailed instructions for Kaspersky Internet Security</b></summary><p>When you have turned off <em>Kaspersky Internet Security</em> protection from the menu bar, the VPN application filter <code>sysextctrld</code> still runs in the background. This filter causes a failure to connect to <code>pub.dev</code>. To resolve this issue, add both <code>https://pub.dev</code> and <code>https://pub.dartlang.org</code> to the trusted zone:</p><ol><li>Open Kaspersky Internet Security.</li><li>Click the <strong>Privacy</strong> icon.</li><li>Under the <strong>Block website tracking</strong> section, click the <strong>Preferences</strong> button.</li><li>In the top icon bar, select <strong>Threats</strong>.</li><li>Under <strong>Threats</strong>, click <strong>Trusted Zone</strong>.</li><li>Select the <strong>Trusted web addresses</strong> tab.</li><li>Click the <strong>+</strong> button, and add the URL <code>https://pub.dev</code>.</li><li>Click <strong>OK</strong>.</li><li>Repeat the previous two steps for <code>https://pub.dartlang.org</code></li></ol></details><p id="page-github-links"><span>Unless stated otherwise, the documentation on this site reflects Dart 3.7.0. Page last updated on 2024-02-07.</span> <a href="https://github.com/dart-lang/site-www/tree/main/src/content/tools/pub/troubleshoot.md" target="_blank" rel="noopener">View source</a> <span>or </span><a href="https://github.com/dart-lang/site-www/issues/new?template=1_page_issue.yml&page-url=https://dart.dev/tools/pub/troubleshoot/&page-source=https://github.com/dart-lang/site-www/tree/main/src/content/tools/pub/troubleshoot.md" title="Report an issue with this page" target="_blank" rel="noopener">report an issue</a>.</p></div></article></main></div><footer id="page-footer"><div class="footer-section footer-main"><a href="/" class="brand" title="Dart"><img src="/assets/img/logo/logo-white-text.svg" alt="Dart" width="164"></a><div class="footer-social-links"><a href="https://medium.com/dartlang" target="_blank" rel="noopener" title="Dart's Medium publication"><svg><use href="/assets/img/social/medium.svg#medium"></use></svg> </a><a href="https://github.com/dart-lang" target="_blank" rel="noopener" title="Dart's GitHub organization"><svg><use href="/assets/img/social/github.svg#github"></use></svg> </a><a href="https://bsky.app/profile/dart.dev" target="_blank" rel="noopener" title="Dart's Bluesky profile"><svg><use href="/assets/img/social/bluesky.svg#bluesky"></use></svg> </a><a href="https://twitter.com/dart_lang" target="_blank" rel="noopener" title="Dart's X (Twitter) profile"><svg><use href="/assets/img/social/x.svg#x"></use></svg></a></div></div><div class="footer-section footer-tray"><div class="footer-licenses">Except as otherwise noted, this site is licensed under a <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>, and code samples are licensed under the <a href="https://opensource.org/licenses/BSD-3-Clause">3-Clause BSD License</a>.</div><div class="footer-utility-links"><ul><li><a href="/terms" title="Terms of use">Terms</a></li><li><a href="https://policies.google.com/privacy" target="_blank" rel="noopener" title="Privacy policy">Privacy</a></li><li><a href="/security" title="Security philosophy and practices">Security</a></li></ul></div></div></footer></div></body></html>