What does this error mean, I have been unable to solve it,

2020/09/04 07:44:00 [error] 11974#11974: *237 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.35.56, server: yacolor.com, request: “GET / HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com
2020/09/04 07:44:01 [error] 11974#11974: *241 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.35.56, server: yacolor.com, request: “POST /?wc-ajax=get_refreshed_fragments HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com”, referrer: “https://yacolor.com/
2020/09/04 07:53:19 [error] 12131#12131: *267 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.34.211, server: yacolor.com, request: “POST /wp-cron.php?doing_wp_cron=1599220399.4462509155273437500000 HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com”, referrer: “https://yacolor.com/wp-cron.php?doing_wp_cron=1599220399.4462509155273437500000
2020/09/04 07:53:19 [error] 12131#12131: *265 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.33.132, server: yacolor.com, request: “GET / HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com
2020/09/04 07:53:21 [error] 12131#12131: *273 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.33.132, server: yacolor.com, request: “POST /?wc-ajax=get_refreshed_fragments HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com”, referrer: “https://yacolor.com/
2020/09/04 07:55:52 [error] 12194#12194: *285 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.34.231, server: yacolor.com, request: “POST /wp-cron.php?doing_wp_cron=1599220552.5538179874420166015625 HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com”, referrer: “https://yacolor.com/wp-cron.php?doing_wp_cron=1599220552.5538179874420166015625
2020/09/04 07:55:52 [error] 12194#12194: *283 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.33.132, server: yacolor.com, request: “GET / HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com
2020/09/04 07:55:55 [error] 12194#12194: *283 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.33.132, server: yacolor.com, request: “POST /?wc-ajax=get_refreshed_fragments HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com”, referrer: “https://yacolor.com/
2020/09/04 07:55:59 [error] 12194#12194: *283 FastCGI sent in stderr: “PHP message: PHP Warning: Zend OPcache can’t be temporary enabled (it may be only disabled till the end of request) in Unknown on line 0” while reading response header from upstream, client: 172.69.33.132, server: yacolor.com, request: “GET /patterns/ HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.4-fpm.sock:”, host: “yacolor.com”, referrer: “https://yacolor.com/

I’ve seen that before, but it wasn’t a Cloudflare issue. I forget what I had to fix, but it was one of my config files on the server. Stackoverflow.com would be a better place to ask

If don’t use cloudflare, the error message will disappear.

May be php configuration file

/etc/php/7.4/phph.ini ---------opcache.enable=1
/etc/php/7.4/cli/php.ini ----opcache.enable=1

Configuration conflict

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