Merge pull request #18 from C0rTeZ13/ensitech-273

ENSITECH-273

Author: MsNatali

src/LaravelPhpRdKafkaConsumerServiceProvider.php

@@ -29,7 +29,7 @@ public function boot(): void
         }
     }
 
-    protected function packageBasePath(string $directory = null): string
+    protected function packageBasePath(?string $directory = null): string
     {
         if ($directory === null) {
             return __DIR__;