Class Illuminate\Bus\Dispatcher contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods - laravel-7

Question

I am trying to use Laravel Jobs, and that worked for few times but now I am getting this error.
Class Illuminate\Bus\Dispatcher contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods
"message": "Class Illuminate\Bus\Dispatcher contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods (Illuminate\Contracts\Bus\QueueingDispatcher::findBatch, Illuminate\Contracts\Bus\QueueingDispatcher::batch, Illuminate\Contracts\Bus\Dispatcher::dispatchSync)",
"exception": "Symfony\Component\ErrorHandler\Error\FatalError",
"file": "D:\xampp8\htdocs\sa-new\laravel-develop\vendor\laravel\framework\src\Illuminate\Bus\Dispatcher.php",
"line": 13,
My controller code looks like this
namespace App\Http\Controllers;
use Carbon\Carbon;
use Illuminate\Database\QueryException;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Response;
use App\Model\BccMapping;
use App\Jobs\ProcessUnmappedRequests;
public function processUnmappedRequests(Request $request){
ProcessUnmappedRequests::dispatch('3',$request);
}
While my Job's code looks like this.
<?php
namespace App\Jobs;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Model\BccMapping;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
class ProcessUnmappedRequests implements ShouldQueue
{
use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
protected $request;
/**
* Create a new job instance.
*
* #return void
*/
public function __construct($id, $request)
{
$this->siteId = $request->get('siteId');
$this->mappingId = $request->get('mappingId');
$this->email = $request->get('originEmail');
}
/**
* Execute the job.
*
* #return void
*/
public function handle()
{
$unmappedRequests = DB::table('bcc')->where("EmailFrom", trim($this->email))->whereNull('BccMappingId')
->where('Archive',0)->get();
if($unmappedRequests->isNotEmpty()){
$mapping = BccMapping::where('id',$this->mappingId )->first();
if(!$mapping)
return false;
$mappingData = json_decode($mapping->mapping);
$keyword = $mapping->keyword;
foreach ($unmappedRequests as $key=>$bcc){
$bccKeyword = app('App\Http\Controllers\BccToolController')->getDomNodeValue($mappingData->keywordPath->path,$bcc->HTML);
var_dump($bccKeyword);die;
}
}else{
return false;
}
}
}
Currently I am using Laravel 7.0 and PHP 7.4.