Fix icu message

src/Bundle/ChillMainBundle/Entity/User.php

@@ -18,7 +18,8 @@ use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\Selectable;
 use Doctrine\ORM\Mapping as ORM;
-use libphonenumber\PhoneNumber;
+use RuntimeException;
+use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Serializer\Annotation as Serializer;
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
@@ -37,7 +38,7 @@ use Chill\MainBundle\Validation\Constraint\PhonenumberConstraint;
  *     "user": User::class
  * })
  */
-class User implements UserInterface, \Stringable
+class User implements UserInterface, \Stringable, PasswordAuthenticatedUserInterface
 {
     /**
      * @ORM\Id
@@ -306,10 +307,7 @@ class User implements UserInterface, \Stringable
         return new ArrayCollection($sortedScopeHistories);
     }
 
-    /**
-     * @return string
-     */
-    public function getPassword()
+    public function getPassword(): ?string
     {
         return $this->password;
     }