The old Gradle logo was on the mobile view for a bit longer than on the desktop view. It looks like there was an attempt to update the logo on mobile, but the new URL was appended to part of the old URL.
It currently is this:
It is probably supposed to be this:
<img src="https://global.discourse-cdn.com/gradle/original/2X/f/f7adea5432e34b63b5aff501f37871c80979536d.png" alt="Gradle Forums" id="site-logo" class="logo-big">
