Bsrgvty

I am trying to fetch table on frontend but getting this error

Fatal error: Class 'CrudCrudatfrontendModelResourceModelPost' not
found in
D:xampphtdocsnewmagvendormagentoframeworkObjectManagerFactoryAbstractFactory.php
on line 93

app/code/Crud/Crudatfrontend/
├── Block
│   └── index.php 
├── etc
│    └── module.xml
├── Model
│   ├── Post.php
│   ├── ResourceModel
│   │   ├── Post
│   │   │   └── Collection.php
│   │   └── Post.php
├── registration.php
├── Setup
│   └── InstallSchema.php
└── view
 └── frontend
 ├── layout
 │   └── crud_index_index.xml
 ├── templates
    └── index.phtml

Here is my code,

Block/Index.php

<?php

namespace CrudCrudatfrontendBlock;

use MagentoFrameworkAppFilesystemDirectoryList;

class Index extends MagentoFrameworkViewElementTemplate

 protected $_filesystem;

 public function __construct(
 MagentoFrameworkViewElementTemplateContext $context,
 CrudCrudatfrontendModelPostFactory $postFactory
 )
 
 parent::__construct($context);
 $this->_postFactory = $postFactory;
 

 public function getResult()
 
 $post = $this->_postFactory->create();
 $collection = $post->getCollection();
 return $collection;
 

Model/Post.php

<?php
namespace CrudCrudatfrontendModel;
class Post extends MagentoFrameworkModelAbstractModel implements MagentoFrameworkDataObjectIdentityInterface

 protected function _construct()
 
 $this->_init('CrudCrudatfrontendModelResourceModelPost');
 

 public function getIdentities()
 
 return [self::CACHE_TAG . '_' . $this->getId()];
 

 public function getDefaultValues()
 
 $values = [];

 return $values;
 

ModelResourceModelPost.php

<?php

namespace CrudCrudatfrontendModelResourceModel;

use MagentoFrameworkModelResourceModelDbAbstractDb;

class HelloWorld extends AbstractDb

 /**
 * Model initialization
 */
 protected function _construct()
 
 $this->_init('Crud_Crudatfrontend', 'post_id');
 

ModelResourceModelPostcollection.php

<?php
namespace CrudCrudatfrontendModelResourceModelPost;

class Collection extends MagentoFrameworkModelResourceModelDbCollectionAbstractCollection

 /**
 * Define resource model
 *
 * @return void
 */
 protected function _construct()
 
 $this->_init('CrudCrudatfrontendModelPost', 'CrudCrudatfrontendModelResourceModelPost');
 

Resources class name is wrong

class HelloWorld extends AbstractDb

it should be

class Post extends AbstractDb

Change it to ModelResourceModelPost.php