@neeravbm Nope, it coming from dblog module only if you observe this line `$o...

@neeravbm Nope, it coming from dblog module only if you observe this line `$output = t($event->message, unserialize($event->variables))` you can easily understand that the second argument was not passed as an array here. I replaced the line with `t($event->message, [unserialize($event->variables)]);` which worked fine.