"System Status: Error" I updated to CiviCRM 5.12.0 hosted on WordPress internally on a QNAP TS-251+ Server. Where do I go from here?
I have not used a QNAP for this, but have in other contexts. You might be able to install entware ( https://www.qnapclub.eu/en/qpkg/556 ) and use that to install php7.1 or similar QPKG from entware's repo