troubleshoot weirdness

Author: greg0ire

lib/Doctrine/ORM/Query.php

@@ -25,6 +25,7 @@
 use function array_values;
 use function assert;
 use function count;
+use function get_class;
 use function get_debug_type;
 use function in_array;
 use function ksort;
@@ -33,6 +34,7 @@
 use function serialize;
 use function sha1;
 use function stripos;
+use function var_dump;
 
 /**
  * A Query object represents a DQL query.
@@ -241,7 +243,13 @@ private function parse(): ParserResult
 
         $this->parserResult = $parser->parse();
 
-        $queryCache->save($cacheItem->set($this->parserResult)->expiresAfter($this->queryCacheTTL));
+        $newCacheItem = $cacheItem->set($this->parserResult);
+
+        if ($cacheItem === null) {
+            var_dump(get_class($newCacheItem));
+        }
+
+        $queryCache->save($newCacheItem->expiresAfter($this->queryCacheTTL));
 
         return $this->parserResult;
     }