I get the same problem. Php version 8.1
PHP Warning: Cannot modify header information – headers already sent by (output started at /home/****/public_html/wp-cron.php:30) in /home/*****/public_html/wp-content/advanced-headers.php on line 35
FYI: advanced-headers.php file is generated by really simple ssl PRO
I use latest litespeed plugin ( version 5.3.2 ) and in cpanel: 6.0.12 (build 13)
Please advise.
UPDATE: After further investigation it seems this is a long reported bug: https://bugs.php.net/bug.php?id=75946&edit=2
The problem will only show if you are running wp-cron through a wget/curl request. If you are instead using a local cron job and calling it directly through php, there is no request so no headers and no issue.
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This reply was modified 2 years, 1 month ago by Robert22.