react-native-elements
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React Native Elements & UI Toolkit
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separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/react-native-elements/"><img class="logo" src="/react-native-elements/img/logo.png" alt="React Native Elements"/></a><a href="/react-native-elements/versions.html"><h3>0.19.1</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/react-native-elements/docs/0.19.1/getting_started.html" target="_self">Docs</a></li><li class="siteNavGroupActive"><a href="/react-native-elements/docs/0.19.1/overview.html" target="_self">Components</a></li><li class=""><a href="/react-native-elements/help.html" target="_self">Help</a></li><li class=""><a href="https://github.com/react-native-training/react-native-elements" target="_self">GitHub</a></li><li class=""><a href="/react-native-elements/blog/" target="_self">Blog</a></li><li class="navSearchWrapper reactNavSearchWrapper"><input type="text" 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</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/react-native-training/react-native-elements/edit/master/docs/troubleshooting.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Troubleshooting</h1></header><article><div><span><p>Although we try to make the experience of using React Native Elements
hassle-free, time to time you may encounter some problems along the way.</p>
<p>On this page you can find solutions to commonly encountered issues.</p>
<h2><a class="anchor" aria-hidden="true" id="invariant-violation-element-type-is-invalid"></a><a href="#invariant-violation-element-type-is-invalid" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>|> Invariant Violation: Element type is invalid</h2>
<p>This error occurs when trying to import a component that doesn't exist. This
usually happens for a few reasons:</p>
<h3><a class="anchor" aria-hidden="true" id="you-incorrectly-spelt-a-component"></a><a href="#you-incorrectly-spelt-a-component" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>You incorrectly spelt a component</h3>
<p>Spelling a component incorrectly though very simple, happens occasionally.</p>
<pre><code class="hljs"><span class="hljs-comment">// Incorrect</span>
<span class="hljs-keyword">import</span> { Listitem } <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native-elements'</span>
<span class="hljs-comment">// Correct</span>
<span class="hljs-keyword">import</span> { ListItem } <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native-elements'</span>
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="importing-a-component-from-the-wrong-version"></a><a href="#importing-a-component-from-the-wrong-version" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Importing a component from the wrong version</h3>
<p>This error occurs when you're trying to use a component from the wrong version.
At RNE they're some components that are only available in some versions.</p>
<pre><code class="hljs css language-md">Example:
<span class="hljs-code">`<FormInput />`</span> is only available in v0.19.1 and below. <span class="hljs-code">`<Input />`</span> is only
available in <span class="hljs-code">`v1.0.0-beta1`</span> and higher.
</code></pre>
<p>To fix this, follow these steps:</p>
<ol>
<li>Check your <code>package.json</code> for the version of <code>react-native-elements</code> you are
using.</li>
<li>View the documentation for your particular version on the website. See
available versions
<a href="https://react-native-training.github.io/react-native-elements/versions.html">here</a>
or click the version number next to the logo in the header.</li>
<li>Checking the list of components on the left side bar, make sure you're using
the right component.</li>
</ol>
<hr>
<h2><a class="anchor" aria-hidden="true" id="fontfamily-font-name-is-not-a-system-font"></a><a href="#fontfamily-font-name-is-not-a-system-font" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>|> "fontFamily <font-name> is not a system font</h2>
<p>This is a general error in react native, where you in your code, or a package
you are using, is trying to use a font that is not bundled with the platform or
is not added to the project.</p>
<p>If you aren't using an custom fonts in your application, then it's likely that
the error comes from React Native Elements looking for
<code>react-native-vector-icons</code>.</p>
<p>They're a couple ways to solve this depending on your setup.</p>
<ul>
<li><a href="#using-react-native-init"><code>react-native-init</code></a></li>
<li><a href="#using-an-expo-app-create-react-native-app-or-expo-xde"><code>create-react-native-app or Expo XDE</code></a></li>
<li><a href="#using-a-detached-create-react-native-app-app"><code>Detached create-react-native-app</code></a></li>
</ul>
<p><br></p>
<h3><a class="anchor" aria-hidden="true" id="using-react-native-init"></a><a href="#using-react-native-init" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Using <code>react-native-init</code></h3>
<ol>
<li>Delete everything to be sure</li>
</ol>
<pre><code class="hljs css language-bash">rm -rf node_modules yarn.lock package-lock.json
</code></pre>
<ol start="2">
<li>Install React Native Elements</li>
</ol>
<pre><code class="hljs css language-bash"><span class="hljs-comment"># npm</span>
npm install && npm install react-native-elements --save
<span class="hljs-comment"># yarn</span>
yarn && yarn add react-native-elements
</code></pre>
<ol start="3">
<li>Install react-native-vector-icons</li>
</ol>
<pre><code class="hljs css language-bash"><span class="hljs-comment"># npm</span>
npm install react-native-vector-icons --save
<span class="hljs-comment"># yarn</span>
yarn add react-native-vector-icons
</code></pre>
<ol start="4">
<li>Link react-native-vector-icons. Learn more about
<a href="https://facebook.github.io/react-native/docs/linking.html">linking</a>.</li>
</ol>
<pre><code class="hljs">react-<span class="hljs-keyword">native</span> link react-<span class="hljs-keyword">native</span>-vector-icons
</code></pre>
<p>If you encounter any red error screens during the process, try running these
commands:</p>
<blockquote>
<p>"Unrecognized font x"</p>
<p>iOS - <code>rm -rf ios/build</code></p>
<p>Android - <code>rm -rf android/build && rm -rf android/app/build</code></p>
</blockquote>
<blockquote>
<p>"Unable to resolve module x"</p>
<p>npm -<code>rm -rf node_modules && npm i</code></p>
<p>yarn - <code>rm -rf node_modules && yarn</code></p>
</blockquote>
<blockquote>
<p>"Unable to resolve module x"</p>
<p><code>npm start -- --reset-cache</code></p>
</blockquote>
<h3><a class="anchor" aria-hidden="true" id="using-an-expo-app-create-react-native-app-or-expo-xde"></a><a href="#using-an-expo-app-create-react-native-app-or-expo-xde" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Using an Expo app (create-react-native-app or Expo XDE)</h3>
<ol>
<li>Delete everything to be sure</li>
</ol>
<pre><code class="hljs css language-bash">rm -rf node_modules yarn.lock package-lock.json
</code></pre>
<ol start="2">
<li>Install React Native Elements</li>
</ol>
<pre><code class="hljs css language-bash"><span class="hljs-comment"># npm</span>
npm install && npm install react-native-elements --save
<span class="hljs-comment"># yarn</span>
yarn && yarn add react-native-elements
</code></pre>
<ol start="3">
<li>Install <code>@expo/vector-icons</code></li>
</ol>
<pre><code class="hljs css language-bash"><span class="hljs-comment"># npm</span>
npm install @expo/vector-icons --save
<span class="hljs-comment"># yarn</span>
yarn add @expo/vector-icons --save
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="using-a-detached-create-react-native-app-app"></a><a href="#using-a-detached-create-react-native-app-app" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Using a detached <code>create-react-native-app</code> app</h3>
<ul>
<li>If you choose a regular React Native project, use
<a href="#using-react-native-init">Solution 1</a></li>
<li>If you choose to use Expo SDK (ExpoKit), use
<a href="#using-an-expo-app-create-react-native-app-or-expo-xde">Solution 2</a></li>
</ul>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/react-native-elements/docs/0.19.1/customization.html"><span class="arrow-prev">← </span><span>Customization</span></a><a class="docs-next button" href="/react-native-elements/docs/0.19.1/overview.html"><span>Overview</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#invariant-violation-element-type-is-invalid">|> Invariant Violation: Element type is invalid</a><ul class="toc-headings"><li><a href="#you-incorrectly-spelt-a-component">You incorrectly spelt a component</a></li><li><a href="#importing-a-component-from-the-wrong-version">Importing a component from the wrong version</a></li></ul></li><li><a href="#fontfamily-font-name-is-not-a-system-font">|> "fontFamily is not a system font</a><ul class="toc-headings"><li><a href="#using-react-native-init">Using <code>react-native-init</code></a></li><li><a href="#using-an-expo-app-create-react-native-app-or-expo-xde">Using an Expo app (create-react-native-app or Expo XDE)</a></li><li><a href="#using-a-detached-create-react-native-app-app">Using a detached <code>create-react-native-app</code> app</a></li></ul></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="sitemap"><a href="/react-native-elements/" class="nav-home"><img src="/react-native-elements/img/logo.png" alt="React Native Elements" width="120" height="58"/></a><div><h5>Docs</h5><a href="/react-native-elements/docs/en/getting_started.html">Getting Started</a><a href="/react-native-elements/docs/en/overview.html">Components</a></div><div><h5>Community</h5><a href="https://reactnativetraining.herokuapp.com/" target="_blank">Chat with us on Slack</a><a href="https://github.com/react-native-training/react-native-elements/issues/" target="_blank">Submit a bug or feature</a><a href="https://opencollective.com/react-native-elements" target="_blank">Support us on Open Collective</a></div><div><h5>More</h5><a href="https://github.com/react-native-training/react-native-elements" target="blank">GitHub</a><a class="github-button" href="https://github.com/react-native-training/react-native-elements" data-icon="octicon-star" data-count-href="/facebook/docusaurus/stargazers" data-show-count="true" data-count-aria-label="# stargazers on GitHub" aria-label="Star this project on GitHub">Star</a></div></section><section class="copyright-logo-container"><a href="http://reactnative.training" target="_blank"><img src="/react-native-elements/img/react-native-training.png" alt="React Native Training" width="90"/></a></section><section class="copyright">Copyright © 2019 React Native Training</section></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><script>
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