.phive/phars.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="phpstan" version="1.11.8" installed="1.11.8" location="./tools/phpstan" copy="false"/>
+  <phar name="phpstan" version="1.*" installed="1.12.13" location="./tools/phpstan" copy="false"/>
   <phar name="phpunit" version="^10.5.20" installed="10.5.20" location="./tools/phpunit" copy="false"/>
   <phar name="phpcs" version="^3.9.2" installed="3.9.2" location="./tools/phpcs" copy="false"/>
   <phar name="phpcbf" version="^3.9.2" installed="3.9.2" location="./tools/phpcbf" copy="false"/>

phpstan-baseline.neon

-parameters:
-	ignoreErrors:
-		-
-			message: "#^Parameter \\#1 \\$cronId of method QUI\\\\Cron\\\\Console\\\\ExecCrons\\:\\:runCron\\(\\) expects bool\\|int, string given\\.$#"
-			count: 1
-			path: src/QUI/Cron/Console/ExecCrons.php
-
-		-
-			message: "#^Access to an undefined property DOMNode\\:\\:\\$tagName\\.$#"
-			count: 1
-			path: src/QUI/Cron/Manager.php
-
-		-
-			message: "#^PHPDoc tag @return with type QUI\\\\Cron\\\\Manager is not subtype of native type static\\(QUI\\\\Cron\\\\Manager\\)\\.$#"
-			count: 1
-			path: src/QUI/Cron/Manager.php
-
-		-
-			message: "#^Call to an undefined method QUI\\\\Projects\\\\Site\\:\\:deactivate\\(\\)\\.$#"
-			count: 1
-			path: src/QUI/Cron/QuiqqerCrons.php

src/QUI/Cron/Console/ExecCrons.php

@@ -22,8 +22,6 @@ class ExecCrons extends QUI\System\Console\Tool
     }
 
     /**
-     * (non-PHPdoc)
-     *
      * @throws Exception
      * @see \QUI\System\Console\Tool::execute()
      */
@@ -101,7 +99,7 @@ class ExecCrons extends QUI\System\Console\Tool
                 $cronId = $this->readInput();
 
                 try {
-                    $this->runCron($cronId);
+                    $this->runCron((int)$cronId);
                 } catch (QUI\Exception $Exception) {
                     $this->writeLn($Exception->getMessage(), 'red');
                     $this->resetColor();

src/QUI/Cron/Manager.php

@@ -410,9 +410,6 @@ class Manager
     /**
      * Execute a cron
      *
-     * @param integer $cronId - ID of the cron
-     *
-     * @return Manager
      * @throws QUI\Exception
      */
     public function executeCron(int $cronId): static
@@ -822,7 +819,11 @@ class Manager
                 for ($j = 0; $j < $Params->length; $j++) {
                     $ParamsNode = $Params->item($j);
 
-                    if ($ParamsNode->parentNode && $ParamsNode->parentNode->tagName === 'cron') {
+                    if (
+                        $ParamsNode->parentNode
+                        && isset($ParamsNode->parentNode->tagName)
+                        && $ParamsNode->parentNode->tagName === 'cron'
+                    ) {
                         $CronParams = $ParamsNode->getElementsByTagName('param');
                         break;
                     }

src/QUI/Cron/QuiqqerCrons.php

@@ -192,7 +192,10 @@ class QuiqqerCrons
             foreach ($result as $entry) {
                 try {
                     $Site = $Project->get((int)$entry['id']);
+
+                    if (method_exists($Site, 'deactivate')) {
                         $Site->deactivate();
+                    }
 
                     $deactivate[] = (int)$entry['id'];
                 } catch (QUI\Exception $Exception) {