I got this error while inputing data through form in my laravel project that some column in database having json datatype.

ProductController.php

<?php

namespace AppHttpControllersManagement;

use AppCoreBaseResponse;
use AppHttpControllersController;
use AppServicesProductService;
use IlluminateHttpJsonResponse;
use IlluminateHttpRequest;
use AppModelsProduct;

class ProductController extends Controller
{

    protected $service;

    public function __construct(ProductService $service)
    {
        $this->service = $service;
    }

    public function index()
    {
        return view('backend.product.index');
    }

    public function table(): JsonResponse
    {
        $users = $this->service->getTable();

        return BaseResponse::json($users);
    }

    public function store(Request $request)
    {
        try {
            # get post parameters
            $post_parameters = $request->input();

            # create new equipment
            $this->service->store($post_parameters);

            # return response
            return BaseResponse::json([
                'success' => 1,
                'message' => "Success to create new product {$post_parameters['product_name']}"
            ]);
        }
        catch (Exception $e) {
            return BaseResponse::json([
                'success' => 0,
                'message' => $e->getMessage(),
                'data' => $post_parameters
            ]);
        }
    }
}

ProductService.php

<?php

namespace AppServices;

use AppLibrariesNanoId;
use AppModelsProduct;
use AppRepositoriesProductRepository;

class ProductService
{

    protected $repository;

    public function __construct()
    {
        // Add your constructor logic here
        $this->repository = new ProductRepository();
        
    }

    public function getTable()
    {
        $product = $this->repository->getTable();

        return $product;
    }

    public function store(array $data)
    {
        $checkProductName = $this->repository->getProductName($data);
        if (!empty($checkProductName))
            throw new Exception('Product Already Registered');

        # generate id
        $nano_id_library = new NanoId();
        $id = $nano_id_library->generateId(false);
        # prepare insert parameters
        $insertParameters = [
            'product_id' => $id,
            'product_code' => $data['product_code'],
            'product_name' => $data['product_name'],
            'product_active_matterials' => $data['product_active_matterials'],
            'product_group' => $data['product_group'],
            'product_pest_target' => $data['product_pest_target'],
            'product_dossage_min' => $data['product_dossage_min'],
            'product_dossage_max' => $data['product_dossage_max'],
            'product_uom' => $data['product_uom'],
            
        ];
        
        $opr = $this->repository->store($insertParameters);

        return $opr;
    }

    public function getById(string $id): object
    {
        return $this->repository->getById($id);
    }
}

product.js

$('#btn-save').on('click', function (e) {
    $('#btn-save')[0].setAttribute('data-kt-indicator', 'on');
    HELPER.block();

    // Disable button to avoid multiple click
    // $('#btn-save')[0].disabled = true;
    if (validator) {
        validator.validate().then(function (status) {

            if (status == 'Valid') {
                // Simulate form submission. For more info check the plugin's official documentation: https://sweetalert2.github.io/
                let data = $('#form-add-new-user').serializeArray();

                $.ajax({
                    url: BASEURL + "/management/product/" + ($('#product_id').val() ? "update" : "store"),
                    type: $('#product_id').val() ? "PUT" : "POST",
                    data: data,
                    dataType: "json",
                    success: function(response) {
                        if (response.success !== 1) {
                            errorAlert(response.message);
                        }
                        else {
                            successAlert(response.message);
                            $(`[data-bs-dismiss="modal"]`).trigger("click");
                            init();
                        }
                    },
                    error: function(xhr, status, error) {
                        errorAlert('Something went wrong!');
                    }
                });
            }
        });
    }

    HELPER.unblock()
});

Product.php(models)

<?php

namespace AppModels;

// use IlluminateContractsAuthMustVerifyEmail;

use AppTraitsDrawTable;
use AppTraitsLoggable;
use IlluminateDatabaseEloquentConcernsHasUuids;
use IlluminateDatabaseEloquentFactoriesHasFactory;
use IlluminateDatabaseEloquentRelationsHasOne;
use IlluminateFoundationAuthUser as Authenticatable;
use IlluminateNotificationsNotifiable;
use LaravelSanctumHasApiTokens;
use SpatieActivitylogLogOptions;
use SpatieActivitylogTraitsLogsActivity;
use SpatiePermissionTraitsHasRoles;
use IlluminateDatabaseEloquentSoftDeletes;

class Product extends Authenticatable
{

    use HasFactory, LogsActivity, HasUuids, Loggable, DrawTable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $table = 'products';

    protected $fillable = [
        'product_id',
        'product_code',
        'product_name',
        'product_active_matterials',
        'product_group',
        'product_pest_target',
        'product_dossage_min',
        'product_dossage_max',
        'product_uom',
    ];

    protected $casts = [
        'product_active_matterials' => 'array',
        'product_pest_target' => 'array',
    ];

    public function getActivitylogOptions(): LogOptions
    {
        return LogOptions::defaults()
            ->logOnly(['*'])
            ->dontSubmitEmptyLogs()
            ->useLogName('products');
    }
}

already looking for some resolve in eloquent laravel docs, but all the docs explain when we declared it inside the file, not with userinput.