I have three multisite installations all using the same theme. get_avatar() does not work on one page of one of the three.
Even when I put this in that page - home.php - to test, nothing at all shows up:
<?php echo get_avatar( '1', 64,get_template_directory_uri().'/i/anonymous.png' ); ?>
It works fine in other pages in the same installation, but in home.php get_avatar() is ignored no matter where in the file I put it.
I have cleared caches.
Anything else I could try?
Can get_avatar clash with anything? Does it require something?
Are there known get_avatar bugs that could cause this?