How to run composer update in laravel 5.5?

I am using Laravel 5.5. I get errors while executing composer update command.

my composer.json require is:

    "require": {
        "php": ">=7.0.0",
        "fideloper/proxy": "~3.3",
        "intervention/image": "^2.4",
        "laravel/framework": "5.5.*",
        "laravel/tinker": "~1.0",
        "morilog/jalali": "^2.3",
        "spatie/laravel-permission": "^2.37",
        "yajra/laravel-datatables-oracle": "~6.0",
        "zizaco/entrust": "5.2.x-dev"
    },

anyone knows how to solve it?

I tried composer update --ignore-platform-reqs but that didn't solve the issue.

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