Call to undefined method Maatwebsite\Excel\Excel::create() - laravel 5.6 - php

Question

I am using Maatwebsite/Excel in my application and when i get the error
Call to undefined method Maatwebsite\Excel\Excel::create()
from one of my controllers. I am using laravel 5.6 and i have followed the documentation strictly and other very few related discussions online to solve this, but i still get the error.
How do i solve this error please
app.php
'provider' => 'Maatwebsite\Excel\ExcelServiceProvider',
'alias' => 'Excel'=> 'Maatwebsite\Excel\Facades\Excel',
Controller
$cl = ClassModel::Select('name')->where('code',$input->class)->first();
$input->class=$cl->name;
$fileName=$input->class.'-'.$input->section.'-'.$input->session.'-'.$input->exam;
// return $students;
Excel::create($fileName, function($excel) use($input,$subjects,$students) {
$excel->sheet('New sheet', function($sheet) use ($input,$subjects,$students) {
$sheet->loadView('app.excel',compact('subjects','input','students'));
});
})->download('xlsx');

Answer 1

You are using 2.* syntax while using 3.* package. Please refer to the correct documentation over here: https://laravel-excel.maatwebsite.nl/docs/3.0/export/basics

Answer 2

Try to decrease the version using :
composer require "maatwebsite/excel=2.1.0"

Answer 3

There have been many changes in the new version of the package.
In your composer.json file inside the require array replace your package with this:
"maatwebsite/excel": "~2.1.0",
and then run composer update
This should work fine.

Answer 4

Please switch to version 2*
Version 3.0 of that package doesn't handle imports yet. Release date for this feature is unknown. See this post for more details: maatwebsite

Answer 5

I have worked it around but I know it's not a perfect solution. It will really help you if you only have concerns with the uploading not adjusting Crudbooster features.
I removed the extra features from the importing screen of the Crudbooster by applying the following CSS in the crudbooster-controller.
$this->style_css = "ul.nav li:not(:first-child) {
display: none;
}";
I copied the getImportData() method from Crudbooster CBController and overridden it in the crudbooster-controller by the following code.
//PHP
//By the way, you can still create your own method in here... :)
public function getImportData()
{
$this->cbLoader();
$data['page_menu'] = Route::getCurrentRoute()->getActionName();
$data['page_title'] = 'Import Data';
if (request('file') && ! request('import')) {
$file = base64_decode(request('file'));
$file = storage_path('app/'.$file);
$data = Excel::import(new ProductImport, $file);
CRUDBooster::redirect('/admin/products', cbLang("alert_add_data_success"), 'success');
}
return view('crudbooster::import', $data);
}
Importing is working fine now