To fix this, open Finder and type this 
<pre><code class="lang-plaintext">/Users/yourUserName/Library/Android/sdk
</code></pre>
<blockquote>
To get this link above, you can open android studio, find "SDK Manager" and click on it. On top of the new page, you should see the link. Copy it..
</blockquote>
After typing the link into Finder, hit enter and you should see a list of files. Look for a folder called "ndk" and delete it.
Go back to your app, cd into android folder and clean gradle with
<pre><code class="lang-plaintext">cd android &amp;&amp; ./gradlew clean
</code></pre>
Once done, rebuild your app
<pre><code class="lang-plaintext">npm run android
</code></pre>
Everything should be fine now.

To fix this, open Finder and type this  

```plaintext
/Users/yourUserName/Library/Android/sdk
```

> To get this link above, you can open android studio, find "SDK Manager" and click on it. On top of the new page, you should see the link. Copy it..

After typing the link into Finder, hit enter and you should see a list of files. Look for a folder called "ndk" and delete it.

Go back to your app, cd into android folder and clean gradle with

```plaintext
cd android && ./gradlew clean
```

Once done, rebuild your app

```plaintext
npm run android
```

Everything should be fine now.

> NDK at /Users/chideraugwuanyi/Library/Android/sdk/ndk/21.4.7075529 did not have a source.properties file in React Native Android

How to fix * What went wrong: Execution failed for task ':app:stripDebugDebugSymbols'. > NDK at /Users/chideraugwuanyi/Library/Android/sdk/ndk/21.4.70