Fixes.

Author: dereuromark

src/Controller/Admin/QueueProcessesController.php

@@ -112,7 +112,7 @@ public function delete(?int $id = null, ?int $sig = null) {
 		$queueProcess = $this->QueueProcesses->get($id);
 
 		if (!Configure::read('Queue.multiserver')) {
-			$this->QueueProcesses->terminateProcess($queueProcess->pid, $sig ?: SIGTERM);
+			$this->QueueProcesses->terminateProcess($queueProcess->pid, $sig ?: \SIGTERM);
 		}
 
 		if ($this->QueueProcesses->delete($queueProcess)) {

src/Queue/Processor.php

@@ -123,16 +123,16 @@ public function run(array $args): int {
 			gc_enable();
 		}
 		if (function_exists('pcntl_signal')) {
-			pcntl_signal(SIGTERM, [&$this, 'exit']);
-			pcntl_signal(SIGINT, [&$this, 'abort']);
-			pcntl_signal(SIGTSTP, [&$this, 'abort']);
-			pcntl_signal(SIGQUIT, [&$this, 'abort']);
+			pcntl_signal(\SIGTERM, [&$this, 'exit']);
+			pcntl_signal(\SIGINT, [&$this, 'abort']);
+			pcntl_signal(\SIGTSTP, [&$this, 'abort']);
+			pcntl_signal(\SIGQUIT, [&$this, 'abort']);
 			if (Configure::read('Queue.canInterruptSleep')) {
 				// Defining a signal handler here will make the worker wake up
 				// from its sleep() when SIGUSR1 is received. Since waking it
 				// up is all we need, there is no further code to execute,
 				// hence the empty function.
-				pcntl_signal(SIGUSR1, function (): void {
+				pcntl_signal(\SIGUSR1, function (): void {
 				});
 			}
 		}