fix ErrorExcception in CacheWarmerAggregate

Ahummeling · Ahummeling · commit 06edb6663c4c · 2021-10-14T13:51:22.000+02:00
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
@@ -50,8 +50,8 @@ public function enableOnlyOptionalWarmers()
      */
     public function warmUp($cacheDir)
     {
+        $collectedLogs = [];
         if ($collectDeprecations = $this->debug && !\defined('PHPUNIT_COMPOSER_INSTALL')) {
-            $collectedLogs = [];
             $previousHandler = set_error_handler(function ($type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
                 if (\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type) {
                     return $previousHandler ? $previousHandler($type, $message, $file, $line) : false;
@@ -102,7 +102,9 @@ public function warmUp($cacheDir)
 
                 if (file_exists($this->deprecationLogsFilepath)) {
                     $previousLogs = unserialize(file_get_contents($this->deprecationLogsFilepath));
-                    $collectedLogs = array_merge($previousLogs, $collectedLogs);
+                    if (is_array($previousLogs)) {
+                        $collectedLogs = array_merge($previousLogs, $collectedLogs);
+                    }
                 }
 
                 file_put_contents($this->deprecationLogsFilepath, serialize(array_values($collectedLogs)));
