I have experienced the same issue with one of our domains. The site was still accessible but I couldn’t login anymore because WordPress could not set cookies due to output generated by the corrupted wp-cache-config.php file. Luckily it was just a microsite, but I’m worried the same could happen to our larger sites. I’ll make it read-only for the time being as well. I have used WP Super Cache for years and it’s the first time this happened. I suspect it was introduced with one of the more recent updates.
