laravel8 + Maatwebsite/excel 3.1 导入excel 失败

1. 运行环境

windows10
phpstudy
nginx

1). 当前使用的 Laravel 版本？

Laravel Framework 8.74.0
//: <> (使用 php artisan --version 命令查看)

2). 当前使用的 php/php-fpm 版本？

PHP 版本：
PHP 7.4.3 (cli) (built: Feb 18 2020 17:29:57) ( NTS Visual C++ 2017 x64 )
//: <> (使用 php --version 命令查看 php 版本)

php-fpm 版本：

3). 当前系统

Windows 10

4). 业务环境

开发环境
//: <> (期待信息 开发环境 或 生产环境)
//: <> (是否使用负载均衡？请提供相关信息)

5). 相关软件版本

2. 问题描述？

控制器代码

public function import(Request $request){
  $file = $request->file('file');
 try{
 Excel::import(new MachineImport, $file);
  }catch (\Exception $exception){
 dd($exception->getMessage());
  }catch (\Error $error){
 dd($error->getMessage());
  }
}

MachineImport import类

<?php

namespace App\Imports;

use App\Models\BackupMachineInfo;
use Maatwebsite\Excel\Concerns\ToModel;
use Maatwebsite\Excel\Concerns\Importable;

class MachineImport implements ToModel
{
    /**
    * @param array $row
    *
    * @return \Illuminate\Database\Eloquent\Model|null
    */
    private $rows = 0;

    public function mapping(): array
    {
        return [
            'company'  => 'A1',
            'name' => 'A2',
            'ip' => 'A3',
            'port' => 'A4',
        ];
    }

    public function model(array $row)
    {
        ++$this->rows;
        return new BackupMachineInfo([
            //
            'company'    => $row['company'],
            'name'     => $row['name'],
            'ip'    => $row['ip'],
            'status'    => '',
            'port'    => $row['port'],
            'used'    => '',
            'leave'    => '',
            'size'    => '',
            'used_percent'    => '',
            'is_delete'    => 0,
            'updated_at'    => 0,
            'created_at'    => date("Y-m-d H:i:s"),
        ]);
    }
    public function getRowCount(): int
    {
        return $this->rows;
    }
}

3. 您期望得到的结果？

4. 您实际得到的结果？

Error: Using $this when not in object context in file E:\example-app\vendor\maatwebsite\excel\src\Excel.php on line 146

#0 E:\example-app\app\Http\Controllers\MachineController.php(151): Maatwebsite\Excel\Excel::import(Object(App\Http\Libraries\ExcelUtil\import), 'C:\\Users\\Admini...')
#1 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Controller.php(54): App\Http\Controllers\MachineController->upload(Object(Illuminate\Http\Request))
#2 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.php(45): Illuminate\Routing\Controller->callAction('upload', Array)
#3 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Route.php(262): Illuminate\Routing\ControllerDispatcher->dispatch(Object(Illuminate\Routing\Route), Object(App\Http\Controllers\MachineController), 'upload')
#4 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Route.php(205): Illuminate\Routing\Route->runController()
#5 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Router.php(695): Illuminate\Routing\Route->run()
#6 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(128): Illuminate\Routing\Router->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#7 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Middleware\SubstituteBindings.php(50): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#8 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Routing\Middleware\SubstituteBindings->handle(Object(Illuminate\Http\Request), Object(Closure))
#9 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\VerifyCsrfToken.php(78): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#10 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Foundation\Http\Middleware\VerifyCsrfToken->handle(Object(Illuminate\Http\Request), Object(Closure))
#11 E:\example-app\vendor\laravel\framework\src\Illuminate\View\Middleware\ShareErrorsFromSession.php(49): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#12 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\View\Middleware\ShareErrorsFromSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#13 E:\example-app\vendor\laravel\framework\src\Illuminate\Session\Middleware\StartSession.php(121): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#14 E:\example-app\vendor\laravel\framework\src\Illuminate\Session\Middleware\StartSession.php(64): Illuminate\Session\Middleware\StartSession->handleStatefulRequest(Object(Illuminate\Http\Request), Object(Illuminate\Session\Store), Object(Closure))
#15 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Session\Middleware\StartSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#16 E:\example-app\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse.php(37): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#17 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle(Object(Illuminate\Http\Request), Object(Closure))
#18 E:\example-app\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\EncryptCookies.php(67): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#19 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Cookie\Middleware\EncryptCookies->handle(Object(Illuminate\Http\Request), Object(Closure))
#20 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(103): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#21 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Router.php(697): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#22 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Router.php(672): Illuminate\Routing\Router->runRouteWithinStack(Object(Illuminate\Routing\Route), Object(Illuminate\Http\Request))
#23 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Router.php(636): Illuminate\Routing\Router->runRoute(Object(Illuminate\Http\Request), Object(Illuminate\Routing\Route))
#24 E:\example-app\vendor\laravel\framework\src\Illuminate\Routing\Router.php(625): Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request))
#25 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(167): Illuminate\Routing\Router->dispatch(Object(Illuminate\Http\Request))
#26 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(128): Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}(Object(Illuminate\Http\Request))
#27 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php(21): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#28 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull.php(31): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))
#29 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull->handle(Object(Illuminate\Http\Request), Object(Closure))
#30 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php(21): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#31 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TrimStrings.php(40): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))
#32 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Foundation\Http\Middleware\TrimStrings->handle(Object(Illuminate\Http\Request), Object(Closure))
#33 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\ValidatePostSize.php(27): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#34 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Foundation\Http\Middleware\ValidatePostSize->handle(Object(Illuminate\Http\Request), Object(Closure))
#35 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance.php(86): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#36 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance->handle(Object(Illuminate\Http\Request), Object(Closure))
#37 E:\example-app\vendor\fruitcake\laravel-cors\src\HandleCors.php(38): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#38 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Fruitcake\Cors\HandleCors->handle(Object(Illuminate\Http\Request), Object(Closure))
#39 E:\example-app\vendor\laravel\framework\src\Illuminate\Http\Middleware\TrustProxies.php(39): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#40 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(167): Illuminate\Http\Middleware\TrustProxies->handle(Object(Illuminate\Http\Request), Object(Closure))
#41 E:\example-app\vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php(103): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#42 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(142): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#43 E:\example-app\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(111): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request))
#44 E:\example-app\public\index.php(52): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#45 {main}