I have the same problem
2018/08/27 13:14:54 [error] 6969#0: *66 FastCGI sent in stderr: "PHP message: PHP Fatal error: <br>The encoded file <b>/usr/local/cwpsrv/htdocs/admin/index.php</b> has expired. in Unknown on line 0" while reading response header from upstream, client: 10.1.1.94, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/usr/local/cwp/php71/var/sockets/cwpsrv.sock:", host: "10.1.7.78:2030"
php ver 5.4.45
cwp ver permission denied
What can I do?