Went through your refresh steps. Did not fix whatever hammered the [insert_php] plugin.
Site still unusable.
REPEATING (4th time):
“So, let me ask the question another way: with a site being update to WP 6x, does Weaver produce any type of warning pop-ups, and if so, can you give me all of them so I can see if any look familiar to what I saw today?”
This is important because the pop-up warning I received this morning during a screen refresh mentioned “Weaver”, “Xtreme” and “update”. Since the site was health on a screen refresh last night, but bombs today after that popup, something associated with Weaver Xtreme occurred. Your answer to the question above is important.