Set default hashing configuration to make it easier for existing Lara…

…vel (#22017)

install to use new Hasher.

Signed-off-by: Mior Muhammad Zaki <crynobone@gmail.com>

src/Illuminate/Hashing/HashManager.php

@@ -71,6 +71,6 @@ public function needsRehash($hashedValue, array $options = [])
      */
     public function getDefaultDriver()
     {
-        return $this->app['config']['hashing.driver'];
+        return $this->app['config']['hashing.driver'] ?? 'bcrypt';
     }
 }