Ritesh Nishar on "Class __PHP_Incomplete_Class has no unserializer"

GD has disabled the offending their Object Cache Plugin (designed by them to negate the need for other caching plugins, which also explains why other cache plugins appear on the plugin blacklist), flushed the cache, and bingo, it’s worked.

But now I have no caching on my site :( Luckily, my site is rather static at the moment.

GD told me that, 'yes their plugin (which is part of their managed wordpress hosting plan) is a known problem since WP 4.5. They are working on it, and a fix date is unknown.'

Does anyone know how to fix line 520 in the GD plugin? Doesn’t mean much to me...

$value = apc_fetch( $key );