diff --git a/src/cli/CronJobs/UpdateCronJob.php b/src/cli/CronJobs/UpdateCronJob.php
index 6bfd24b3..6fa6df1c 100644
--- a/src/cli/CronJobs/UpdateCronJob.php
+++ b/src/cli/CronJobs/UpdateCronJob.php
@@ -24,6 +24,11 @@ class UpdateCronJob implements CommandInterface {
 
         global $db, $gitRelease;
 
+        if (!$gitRelease) {
+            FileLogger::log('cron', 'GitRelease service not initialized', 'cron:update');
+            return 1;
+        }
+
         $rConfig = parse_ini_string(file_get_contents('/home/xc_vm/config/config.ini'));
         if (!isset($rConfig['is_lb']) || !$rConfig['is_lb']) {
             $rPort = (intval(explode(';', explode(' ', trim(explode('listen ', file_get_contents('/home/xc_vm/bin/nginx/conf/ports/http.conf'))[1]))[0])[0]) ?: 80);
diff --git a/src/cli/DaemonTrait.php b/src/cli/DaemonTrait.php
index bfee1ef2..0bd7af86 100644
--- a/src/cli/DaemonTrait.php
+++ b/src/cli/DaemonTrait.php
@@ -35,9 +35,9 @@ trait DaemonTrait {
 	 */
 	protected function killStaleProcesses(string $rPattern): void {
 		$rPID = intval(getmypid());
-		$rPids = trim(shell_exec('ps aux | grep ' . escapeshellarg($rPattern) . ' | grep -v grep | grep -v ' . $rPID . " | awk '{print \$2}'") ?? '');
+		$rPids = trim(@shell_exec('ps aux | grep ' . escapeshellarg($rPattern) . ' | grep -v grep | grep -v ' . $rPID . " | awk '{print \$2}'") ?? '');
 		if ($rPids !== '') {
-			shell_exec('kill -9 ' . $rPids . ' > /dev/null 2>&1');
+			@shell_exec('kill -9 ' . $rPids . ' > /dev/null 2>&1');
 		}
 	}
 
diff --git a/src/core/Database/Database.php b/src/core/Database/Database.php
index 06f8aa49..18f7a659 100644
--- a/src/core/Database/Database.php
+++ b/src/core/Database/Database.php
@@ -129,7 +129,8 @@ class Database {
 			$this->result = $this->dbh->prepare($query);
 			$this->result->execute($next_arg_list);
 		} catch (Exception $e) {
-			$actual_query = trim(explode("\n", explode('Sent SQL:', $this->debugString($this->result))[1])[0]);
+			$rDebugParts = explode('Sent SQL:', $this->debugString($this->result));
+			$actual_query = isset($rDebugParts[1]) ? trim(explode("\n", $rDebugParts[1])[0]) : '';
 
 			if (strlen($actual_query) == 0) {
 				$actual_query = $query;
diff --git a/src/core/Process/ProcessManager.php b/src/core/Process/ProcessManager.php
index 522c0b73..66398a21 100644
--- a/src/core/Process/ProcessManager.php
+++ b/src/core/Process/ProcessManager.php
@@ -475,7 +475,7 @@ class ProcessManager {
      */
     public static function isNginxRunning() {
         $rOutput = [];
-        exec('pgrep -u xc_vm -a 2>/dev/null', $rOutput);
+        @exec('pgrep -u xc_vm -a 2>/dev/null', $rOutput);
         foreach ($rOutput as $rProcess) {
             if (preg_match('/nginx:\s+master/', $rProcess)) {
                 return true;