encore un difficulté

Voici mon action _show du module messagerie

Code:

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public function _show(){
 
 
        $tUsers = model_users::getInstance()->findAll();
        $oUserShow = model_users::getInstance()->findById(_root::getParam('id'));
 
        $tList_Messages = array_reverse(model_messages::getInstance()->findByUsers(_root::getAuth()->getAccount()->id,_root::getParam('id')));
 
        $oView=new _view('messagerie::show');
        $oView->tUsers=$tUsers;
        $oView->oUserShow=$oUserShow;
        $oView->tList_Messages=$tList_Messages;
 
        $oPluginXsrf=new plugin_xsrf();
        $oView->token=$oPluginXsrf->getToken();
 
        $tMessage=$this->processSave();
        $oMessages=new row_messages;
        $oView->oMessages=$oMessages;
 
        $oView->tMessage=$tMessage;
 
 
        $this->oLayout->add('main',$oView);
    }

voilà ma vue show

Code:

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<?php
$oForm=new plugin_form($this->tList_Messages);
$oForm=new plugin_form($this->oMessages);
$oForm->setMessage($this->tMessage);
$oForm=new plugin_form($this->oUserShow);
?>
<div class="container">
    <div class="row">
        <div class="col-md-3">
            <div class="list-group">
                <?php foreach($this->tUsers as $oUsers): ?>
                    <?php $tUser_Login = explode("@", $oUsers->email) ?>
                        <?php if ($oUsers->id !== _root::getAuth()->getAccount()->id): ?>
                            <a class="list-group-item" href="<?php echo $this->getLink('messagerie::show',array('id'=>$oUsers->getId())) ?>">
                                <?php echo $tUser_Login[0] ?>
                            </a>
                        <?php endif ?>
                <?php endforeach ?>
            </div>
        </div>
        
        <div class="col-md-9">
            <div class="card">
                <h4 class="card-header"><?php  echo $this->oUserShow->email ?></h4>
                <div class="card-body conversations">
                    <?php foreach($this->tList_Messages as $oMessages): ?>
                    <?php $user_chat = explode("@", $oMessages->email) ?>
                        <div class="row">
                            <div class="col-md-10 <?php if ($oMessages->msg_to  !== _root::getAuth()->getAccount()->id) {
                                                            echo 'offset-md-2 text-right';
                                                        }else echo '';  
                                                    ?>">
                                <p>
                                    <strong>
                                        <?php  if ($oMessages->msg_to  !== _root::getAuth()->getAccount()->id) {
                                                            echo 'moi';
                                                        }else echo  $user_chat[0];
                                        ?>
                                    </strong><br>
                                    <?php echo nl2br($oMessages->content) ?>
                                </p>
                            </div>
                        </div>
                        
                    <?php endforeach ?>
                    
                  
                    <form  method="POST">
                        <div class="form-group">
                            <?php echo $oForm->getInputTextArea('content',array('class'=>'form-control','placeholder'=>'Ecrivez votre message')) ?>
                            <input type="hidden" name="msg_from" value="<?php echo _root::getAuth()->getAccount()->id ?>"/>
                            <input type="hidden" name="msg_to" value="<?php  echo $this->oUserShow->id ?>"/>
                            
                        </div>
                        <a class="btn btn-link" href="<?php echo $this->getLink('messagerie::show')?>"><input class="btn btn-success" type="submit" value="Ajouter" /> </a>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>

voilà le message d'erreur

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Trying to get property of non-object
#0 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\view\show.php(24): exception_error_handler(8, 'Trying to get p...', 'C:\\xampp\\htdocs...', 24, Array)
#1 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_view.php(85): include('C:\\xampp\\htdocs...')
#2 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_layout.php(158): _view->show()
#3 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\layout\bootstrap.php(31): _layout->load('main')
#4 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_layout.php(122): include('C:\\xampp\\htdocs...')
#5 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\main.php(69): _layout->show()
#6 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_root.php(276): module_messagerie->after()
#7 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\public\index.php(47): _root->run()
#8 {main}
 
Detail:
#0 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\view\show.php (24) 
exception_error_handler( , 'Trying to get property of non-object' , 'C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\view\show.php' , , Array ( [oForm] => plugin_form Object ( [oObject:protected] => [tMessage:protected] => [isPost:protected] => ) [oUsers] => row_users Object ( [sClassModel:protected] => model_users [_bChooseUpdate:abstract_row:private] => 1 [_tProperty:protected] => Array ( [id] => 15 [email] => sandra.cadet@ersm-reunion.cnamts.fr [password] => 3844e6189c1576c7d94f5be89e838eed7802c2ab ) [_tPropertyToUpdate:protected] => ) [tUser_Login] => Array ( [0] => sandra.cadet [1] => ersm-reunion.cnamts.fr ) ) ) 
#1 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_view.php (85) 
include( 'C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\view\show.php' ) 
#2 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_layout.php (158) 
_view -> show( ) 
#3 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\layout\bootstrap.php (31) 
_layout -> load( 'main' ) 
#4 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_layout.php (122) 
include( 'C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\layout\bootstrap.php' ) 
#5 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\main.php (69) 
_layout -> show( ) 
#6 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\lib\framework\class_root.php (276) 
module_messagerie -> after( ) 
#7 C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\public\index.php (47) 
_root -> run( ) 
#8 {main}
Fichier : C:\xampp\htdocs\2-mkFramework\mkframework-4.130.6\data\genere\messagerie\module\messagerie\view\show.php ligne 24
 
Message : Trying to get property of non-object
 
6	?>
7	<div class="container">
8	    <div class="row">
9	        <div class="col-md-3">
10	            <div class="list-group">
11	                <?php foreach($this->tUsers as $oUsers): ?>
12	                    <?php $tUser_Login = explode("@", $oUsers->email) ?>
13	                        <?php if ($oUsers->id !== _root::getAuth()->getAccount()->id): ?>
14	                            <a class="list-group-item" href="<?php echo $this->getLink('messagerie::show',array('id'=>$oUsers->getId())) ?>">
15	                                <?php echo $tUser_Login[0] ?>
16	                            </a>
17	                        <?php endif ?>
18	                <?php endforeach ?>
19	            </div>
20	        </div>
21	        
22	        <div class="col-md-9">
23	            <div class="card">
24	                <h4 class="card-header"><?php  echo $this->oUserShow->email ?></h4>
25	                <div class="card-body conversations">
26	                    <?php foreach($this->tList_Messages as $oMessages): ?>
27	                    <?php $user_chat = explode("@", $oMessages->email) ?>
28	                        <div class="row">
29	                            <div class="col-md-10 <?php if ($oMessages->msg_to  !== _root::getAuth()->getAccount()->id) {
30	                                                            echo 'offset-md-2 text-right';
31	                                                        }else echo '';  
32	                                                    ?>">
33	                                <p>
34	                                    <strong>
35	                                        <?php  if ($oMessages->msg_to  !== _root::getAuth()->getAccount()->id) {
36	                                                            echo 'moi';
37	                                                        }else echo  $user_chat[0];
38	                                        ?>
39	                                    </strong><br>
40	                                    <?php echo nl2br($oMessages->content) ?>
41	                                </p>

pourquoi je ne peux pas avoir l'email de la personne (écriture en rouge)???