Integrity constraint violation in my api platform relation

Symfony : 4.4API PLATFORM : 2.5 

I have to entities : Client & Location : a client have many locations, a location is related to one client

Client Entity:

    /** * @ORM\Entity(repositoryClass="App\Repository\ClientRepository") * * * @ApiResource( *     normalizationContext={"clients:get"}, *     collectionOperations={ *          "get"={ *              "normalization_context": { "groups" = {"clients:get"} }, *          }, *          "post"={ *               "security"="is_granted('IS_AUTHENTICATED_ANONYMOUSLY')", *               "normalization_context": { "groups" = {"client:get"} }, *               "denormalization_context": { "groups" = {"client:create"} }, *               "method"="POST", *               "controller"=ClientCreate::class *          } *     }, *     itemOperations={ *          "get"={ *              "normalization_context": { "groups" = {"clients:get"} }, *           }, *          "put"={ *               "security"="is_granted('IS_AUTHENTICATED_ANONYMOUSLY')", *               "normalization_context": { "groups" = {"client:get"} }, *               "denormalization_context": { "groups" = {"client:put"} }, *          }, *     } * ) * */class Client implements UserInterface{    /**     * @ORM\Id()     * @ORM\GeneratedValue()     * @ORM\Column(type="integer")     *     * @Groups({"clients:get"})     *     */    private $id;    /**     * @ORM\OneToMany(targetEntity="App\Entity\Location", mappedBy="client", cascade={"persist", "remove"}), orphanRemoval=true)     *     *@Groups({"client:create","client:get","client:put"})     *     * @ApiSubresource()     *     */    private $locations;

Location Entity:

/** * @ORM\Entity(repositoryClass="App\Repository\LocationRepository") * * @ApiResource() * */class Location{    /**     * @ORM\Id()     * @ORM\GeneratedValue()     * @ORM\Column(type="integer")     *     */    private $id;    /**     * @ORM\Column(type="string", length=255, nullable=true)     *     * @Groups({"client:create","client:get","client:put"})     *     */    private $address;//... others attributes    /**     * @ORM\Column(type="string", length=255)     *     * @Groups({"client:create","client:get","client:put"})     *     */    private $locationName;    /**     * @ORM\ManyToOne(targetEntity="App\Entity\Client", inversedBy="locations", fetch="EXTRA_LAZY")     * @ORM\JoinColumn(nullable=false)     */    private $client;

I'm trying to make the relation Client-Location behaves like when I create a client => locations are created => that's works OK for me with this code.and also I want when I put a client, its old locations are removed, and It creates a new locations that are attached to this client but I got error in put.

ActionPUT /api/clients/58Body:

{"locations": [        {"address": "dfsdfaaaaaaaa","locationName": "sdfsdf"        }    ]}

RESPONSE:

{"@context": "/api/contexts/Error","@type": "hydra:Error","hydra:title": "An error occurred","hydra:description": "An exception occurred while executing 'UPDATE location SET client_id = ? WHERE id = ?' with params [null, 24]:\n\nSQLSTATE[23000]: Integrity constraint violation: 1048 Column 'client_id' cannot be null","trace": [    {"namespace": "","short_class": "","class": "","type": "","function": "","file": "/home/karimengineer/Desktop/SystemFood/api/system_food_api/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php","line": 103,"args": []    },