wmgtam

noting also we’re on PHP 7.2 and CentOS. All worked fine previous to this release.

Following up — I see the same error, I have direct (SSH) access to the filesystem.

[10-Sep-2021 18:59:07 UTC] PHP Fatal error:  Uncaught W3TC\Util_WpFile_FilesystemOperationException in /mnt/ebs/public_html/localwp/wp-content/plugins/w3-total-cache/Util_WpFile.php:242
Stack trace:
#0 /mnt/ebs/public_html/localwp/wp-content/plugins/w3-total-cache/Generic_Environment.php(19): W3TC\Util_WpFile::file_exists('/mnt/ebs/public...')
#1 /mnt/ebs/public_html/localwp/wp-content/plugins/w3-total-cache/Root_Environment.php(28): W3TC\Generic_Environment->fix_on_wpadmin_request(Object(W3TC\Config), false)
#2 /mnt/ebs/public_html/localwp/wp-content/plugins/w3-total-cache/Generic_Plugin_Admin.php(742): W3TC\Root_Environment->fix_in_wpadmin(Object(W3TC\Config))
#3 /mnt/ebs/public_html/localwp/wp-includes/class-wp-hook.php(303): W3TC\Generic_Plugin_Admin->admin_notices('')
#4 /mnt/ebs/public_html/localwp/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(false, Array)
#5 /mnt/ebs/public_html/localwp/wp-includes/plugin.php(470): WP_Hook->do_action(Array)
#6 /mnt/ebs/public_html/localwp/wp-admin/admin-header.php(273): do_action('network_admin_n... in /mnt/ebs/public_html/localwp/wp-content/plugins/w3-total-cache/Util_WpFile.php on line 242

Joshua — thanks for the very helpful plugin. I actually had the same problem — this plugin doesn’t do anything on the home page — and I looked into the plugin code and found the problem pretty quickly.

You are conditioning running everything on get_queried_object_id() returning a non-0 value. Trouble is, in my theme (as in many), the home page isn’t a ‘page’, and it doesn’t have a post_id or page_id.

For my own hack I made changed these two lines in your main plugin file

if( get_queried_object_id() ) {
	$queried_object_id = get_queried_object_id();

to

if( get_queried_object_id() ) {
	$queried_object_id = get_queried_object_id();
} elseif (is_home()){
	$queried_object_id = 1;
}
if ($queried_object_id){

This is imperfect fix — I don’t use date-based archives and I suspect we’d have the same problem on them — but it worked for my case like a charm.

This is happening for me, too. The error is because $evt is expected to be an object, and my environment has php set “strict”

In fsCalendarEvent.php at line 69 is

$evt->eventid = 0;

I inserted a line above it to instantiate $evt as a class to fix it.

$evt = new stdClass();
$evt->eventid = 0;

It seems to work for me.