Missing required parameter for [Route: company.index] [URI: company/{companySlug}] [Missing parameter: companySlug].

articles table

public function up()
{
    Schema::create('articles', function (Blueprint $table) {
        $table->id();
        $table->foreignId('user_id')->constrained()->cascadeOnDelete();
        $table->string('title');
        $table->string('slug');
        $table->string('image')->nullable();
        $table->text('body');
        $table->timestamps();
    });
}

companies table

public function up()
{
    Schema::create('companies', function (Blueprint $table) {
        $table->id();
        $table->foreignId('user_id')->constrained()->cascadeOnDelete();
        $table->foreignId('unity_id')->constrained()->cascadeOnDelete();
        $table->foreignId('article_id')->constrained()->cascadeOnDelete();
        $table->string('title');
        $table->string('slug');
        $table->string('image')->nullable();
        $table->text('body');
        $table->timestamps();
    });
}

Company.php

use HasFactory, Sluggable;

protected $guarded = [];

public function user()
{
    return $this->belongsTo(User::class);
}

public function unity()
{
    return $this->belongsTo(Unity::class);
}

public function sluggable(): array
{
    return [
        'slug' => [
            'source' => 'title'
        ]
    ];
}

public function path()
{
    return '/company/'.$this->slug;
}

Article.php

use HasFactory, Sluggable;

protected $guarded = [];

public function user()
{
    return $this->belongsTo(User::class);
}

public function sluggable(): array
{
    return [
        'slug' => [
            'source' => 'title'
        ]
    ];
}

public function path()
{
    return '/article/'.$this->slug;
}

ArticleController.php

public function single(Article $article)
{
    $cities = City::query()->where('state_id', 26)->get();
    return view('Home.contents.article', compact('article', 'cities'));
}

CompanyController.php

public function single(Company $company)
{
    //$company = Company::query()->where('');
    return view('Home.contents.company', compact('company'));
}

article.blade.php

<div class="container bg-white pt-5 pb-5">
    <div class="row">
        <h2>{{ $article->title }}</h2>
        <div class="d-flex justify-content-center p-5">
            <img src="{{ asset('storage/'.$article->image) }}" alt="{{ $article->title }}" class="img-fluid">
        </div>
        <div class="ps-5 pe-5 mb-3">
            {{ $article->body }}
        </div>
        <div class="ps-5 pe-5">
            <form action="{{ route('company.index') }}" method="get">
                <div class="row mb-3">
                    <div class="col-lg-3">
                        <label for="city_id" class="form-label">city_id</label>
                        <select class="form-select" id="city_id" name="city_id">
                            @foreach($cities as $city)
                                <option value="{{ $city->id }}">{{ $city->name }}</option>
                            @endforeach
                        </select>
                    </div>
                    <div class="col-lg-3">
                        <label for="company_id" class="form-label">company_id</label>
                        <select class="form-select" id="company_id" name="company_id">

                        </select>
                    </div>
                </div>
                <div class="row mb-3">
                    <div class="col-lg-3">
                        <button type="submit" class="btn btn-warning btn-lg">Continue</button>
                    </div>
                </div>
            </form>
        </div>
    </div>
</div>

company.blade.php

<div class="container bg-white pt-5 pb-5">
    <div class="row">
        <h2>{{ $company->title }}</h2>
        <div class="d-flex justify-content-center p-5">
            <img src="{{ asset('storage/'.$company->image) }}" alt="{{ $company->title }}" class="img-fluid">
        </div>
        <div class="ps-5 pe-5 mb-3">
            {{ $company->body }}
        </div>
    </div>
</div>

web.php

Route::get('/article/{articleSlug}', [App\Http\Controllers\ArticleController::class, 'single']);
Route::get('/company/{companySlug}', [App\Http\Controllers\CompanyController::class, 'single'])->name('company.index');

RouteServiceProvider.php

Route::bind('companySlug', function ($value) {
    return Company::whereSlug($value)->firstOrFail();
});
Route::bind('articleSlug', function ($value) {
    return Article::whereSlug($value)->firstOrFail();
});