Android Studio - failed to start adb
<p>I recently started learning android programming using android studio but every time I open the emulator and drag an apk to the emulator it says:</p>

<blockquote>
  <p>failed to start adb - Check settings to verify your chosen adb path is
  valid</p>
</blockquote>

<p>as shown in the link below.</p>

<p>How can I fix this?</p>

<p>PS: Sorry for my English.</p>

<p><img src="https://i.stack.imgur.com/raa2q.png" alt="android failed to start adb image"></p>