Proxmox trying to acquire lock… TASK ERROR: can’t lock file ‘/var/lock/qemu-server/lock-102.conf’ – got timeout

If Proxmox won’t start aVM with an error like this:

trying to acquire lock...
TASK ERROR: can't lock file '/var/lock/qemu-server/lock-102.conf' - got timeout
rm /var/lock/qemu-server/lock-102.conf

Solution two

qm unlock <ID>

Then try to restart the VM and it should be good.

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Fatal error: Uncaught Error: Class 'W3TC\Util_Http' not found in /www/wwwroot/hostslb.com/wp-content/plugins/w3-total-cache/Cdn_Plugin.php:1030 Stack trace: #0 /www/wwwroot/hostslb.com/wp-content/plugins/w3-total-cache/Cdn_Plugin.php(862): W3TC\_Cdn_Plugin_ContentFilter->fill_regexps() #1 /www/wwwroot/hostslb.com/wp-content/plugins/w3-total-cache/Cdn_Plugin.php(313): W3TC\_Cdn_Plugin_ContentFilter->replace_all_links('<!DOCTYPE HTML>...') #2 [internal function]: W3TC\Cdn_Plugin->ob_callback('<!DOCTYPE HTML>...') #3 /www/wwwroot/hostslb.com/wp-content/plugins/w3-total-cache/Util_Bus.php(21): call_user_func(Array, '<!DOCTYPE HTML>...') #4 /www/wwwroot/hostslb.com/wp-content/plugins/w3-total-cache/Generic_Plugin.php(549): W3TC\Util_Bus::do_ob_callbacks(Array, '<!DOCTYPE HTML>...') #5 [internal function]: W3TC\Generic_Plugin->ob_callback('<!DOCTYPE HTML>...', 9) #6 /www/wwwroot/hostslb.com/wp-includes/functions.php(4609): ob_end_flush() #7 /www/wwwroot/hostslb.com/wp-includes/class-wp-hook.php(287): wp_ob_end_flush_all('') #8 in /www/wwwroot/hostslb.com/wp-content/plugins/w3-total-cache/Cdn_Plugin.php on line 1030