fakruzaruret I put this line into Admin > Appearance > Custom Header.
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
But this can't solve the whole problem, sometimes it reports one error or two. . .
I also tried copying this line to Cloud Server > Flarum installation directory > extend.php
at the same time, but I still get an error or two sometimes. I think this is a problem with the plugin. . .