Topic: PHP 8.4 trigger_error($msg, E_USER_ERROR) obsolete

I guess calling trigger_error($msg, E_USER_ERROR) is obsoleted in 8.4....

My quick fix was to modify:

includes\errors.inc

- add line 26 : 
$bt = ($errno == E_USER_ERROR or $errno ==  E_USER_WARNING) ? "" : $bt;

- replace line 96: 
error_handler($exception->getCode(), sprintf(_("Unhandled exception [%s]: %s."), $exception->getCode(), $exception->getMessage()), $exception->getFile(), $exception->getLine());
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modify includes\ui\ui_msgs.inc

- replace line 14:
error_handler(E_USER_ERROR, $msg, "","");

- replace line 19:
error_handler(E_USER_NOTICE, $msg, "","");