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Hi,
Today I logged in to my multisite and for some reason I have opened 10 of my websites at once in new tabs and then BOOM ! Fatal error with advanced-cache.php file auto generated in wp-content folder.
See this screenshot: https://ibb.co/xJQ0xPz on line 64 there is closed chars but there is no any open codes, why?
I think this is serious BUG and you need to fix it asap.
Fox fixing the problem I forced to remove line 64 and change file permission to readonly.
Regards
