WebView Content Security Policy
<p>I want to load a video from Vimeo in a WebView. It works, but the preview image doesn't load and I get this error:</p>

<blockquote>
  <p>I/chromium: [INFO:CONSOLE(0)] "Refused to load the image 'android-webview-video-poster:default_video_poster/-5228946977756841864' because it violates the following Content Security Policy directive: "img-src <a href="https://i.vimeocdn.com" rel="noreferrer">https://i.vimeocdn.com</a> <a href="https://secure-b.vimeocdn.com" rel="noreferrer">https://secure-b.vimeocdn.com</a> <a href="https://f.vimeocdn.com" rel="noreferrer">https://f.vimeocdn.com</a> <a href="https://vimeo.com" rel="noreferrer">https://vimeo.com</a> <a href="https://sb.scorecardresearch.com" rel="noreferrer">https://sb.scorecardresearch.com</a> <a href="https://ssl.google-analytics.com" rel="noreferrer">https://ssl.google-analytics.com</a> <a href="https://secure.gravatar.com" rel="noreferrer">https://secure.gravatar.com</a> <a href="https://i0.wp.com" rel="noreferrer">https://i0.wp.com</a> <a href="https://i1.wp.com" rel="noreferrer">https://i1.wp.com</a> <a href="https://i2.wp.com" rel="noreferrer">https://i2.wp.com</a>".
                                                                   ", source: <a href="https://player.vimeo.com/video/172374044" rel="noreferrer">https://player.vimeo.com/video/172374044</a> (0)</p>
</blockquote>

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