Hello,
I get a lot of the same errors. This is one full error message:
2022/05/31 08:23:10 [error] 32720#32720: *4506289 FastCGI sent in stderr: "PHP message: PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /www/meestergijs_294/public/wp-includes/class-wp-hook.php on line 307" while reading response header from upstream, client: 207.46.13.135, server: meestergijs.nl, request: "GET /cursusaanbod/?1649572517 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php7.4-fpm-meestergijs.sock:", host: "meestergijs.nl:24223"
If I check this and all the others, all the errors come out after GET requests to /cursusaanbod/?1649572517. The number just varies. I'm afraid I could not identify what's causing those requests. You've built this theme. Do you know what this means and how to fix it?
Thanks,
Gijs
hi
I found that it’s just a warning:
https://screencast-o-matic.com/i/c3fT2eVYOuN
It’s Notices /warnings and is nothing to worry about. it has nothing to do with the actual functionality.
What are PHP Notices?
PHP notices are the least important. As stated on the official PHP website, you will see PHP notices when:
the script encountered something that could indicate an error, but could also happen in the normal course of running a script.
Refer https://www.ostraining.com/blog/wordpress/warnings/
you could hide these notices, by following this link: https://www.wpbeginner.com/wp-tutorials/how-to-turn-off-php-errors-in-wordpress
if you found any FATAL ERROR then let us know.