内部服务器错误500 Codeigniter上传到虚拟主机

I am facing server 500 error on following website, fabcoders.com/ghostwriter

The code is in codeigniter Here is the controller section

public function view_submission_detail ($submission_id)
    {   
        $user_id = $this->session->userdata("id");
        $this->load->model("submission_m");
        $this->load->model("ratings_m");

        $star = $this->input->post("rating");
        $review=$this->input->post("reviews");
        $tip=$this->input->post("tip");


    $record  = $this->submission_m->get($submission_id);
    $rat_to=$record->fk_user_id;
    //dump($record);
    $select = $this->ratings_m->get($rat_to);
    //$tip=$select->tip;


    $this->load->model("addproject_m");
    $temp = $this->user_m->get($rat_to);


    $emailid = $temp->email;
    $user_id = $temp->id;
    $prjct = $this->addproject_m->get($record->fk_project_id); 
    //dump($record->fk_project_id);
    //dump($prjct);
    $pname = $prjct->p_title;
    $buyername = $prjct->p_buyname;
    $this->data['tip'] = $tip;
    $this->data['numele'] = count($this->submission_m->viewusersub($user_id));
    $this->data['numacc'] = count($this->submission_m->viewuseracc($user_id));
    $this->data['numrej'] = count($this->submission_m->viewuserreject($user_id));
    $this->data['numrew'] = count($this->submission_m->viewuserrewrite($user_id));
    //$this->data['usersubs'] = $this->submission_m->viewusersub($user_id);

    $get_rating_count=$this->submission_m->get_rating_count($rat_to);//rating_m
    $this->data['get_rating_count']=$get_rating_count;

    $get_rating_details=$this->submission_m->get_rating_details($rat_to);//rating_m
    $this->data['get_rating_details']=$get_rating_details;
    $sum=0;
    foreach($get_rating_details as $rows)
    {
    $sum=$sum+$rows->rating;
    }
    $average_rating=0;
    if($get_rating_count != 0)
    $average_rating=(int)($sum/$get_rating_count);

    if($this->input->post("accept") && $this->input->post("pk_submission_id")){
         redirect('dashboard');

    }else if($this->input->post("reject") && $this->input->post("pk_submission_id")){
        $this->submission_m->reject_submission($submission_id);
        $this->submission_m->rejectMail($emailid,$pname,$buyername);                    
        redirect('dashboard');

    }else if($this->input->post("rewrite") && $this->input->post("pk_submission_id")){
        $this->submission_m->rewrite_submission($submission_id);
        $this->submission_m->rewriteMail($emailid,$pname,$buyername);   
        redirect('dashboard');
    }
    $this->data['average_rating']=$average_rating;
    $this->data['submission'] =  $this->submission_m->get($submission_id);
    $this->data['username'] = $this->user_m->get($this->data['submission']->fk_user_id);
    $this->data['project'] =  $this->addproject_m->get($this->data['submission']->fk_project_id);
    $this->load->view('project/view_submission_details', $this->data);
}

Here is the view part p_title ?> img/close.png"> Writer's Name:

firstname ?> Submitted Date: created))); ?> Rating:
                </li><?php if($tip!= ""){?>
                <li class="label-list">Tip for Writer:</li>
                <li><?php echo $tip; } ?></li>

                <br>
                <?php if($numele>=1)
                    echo "Previous submissions";?>
                <br>
                <?php if($numele>=1)
                    echo "Number of submissions ".$numele;?>
                <br>
                <?php if($numacc>=1)
                    echo "Number of Projects Accepted ".$numacc;?>
                <br>
                <?php if($numrej>=1)
                    echo "Number of Projects Rejected ".$numrej;?>
                <br>
                <?php if($numrew>=1)
                    echo "Number of Projects Rewritten ".$numrew;?>
                <br>
                <? } ?>
                <?php //echo "Tip".$get_rating_details->tip ?>

            </ul>


        <div class="content1 div-center2 colorwhite">
            <p class="text-content"><?php echo nl2br( htmlentities($submission->content)) ?></p>
                            </div>

            <div class="buttons">
            <ul class="button-row">


            <?php if(!($project->p_complete==1) && ($submission->status=='NOT REVIEWED')) { ?>
                <?php 
                echo form_open('','id="contentForm"');
                echo form_hidden("pk_submission_id",$submission->pk_submission_id);

                echo " ".form_submit("accept","Accept",'class="btn-green .btn-small" id="acceptBtn"');
                echo " ".form_submit("reject","Reject",'class="btn-red .btn-small"');
                echo " ".form_submit("rewrite","Rewrite",'class="btn-blue .btn-small"');

                echo form_close();
                ?>

                <?php } ?>

            </ul>

    </body>
    </html>
    <script>
            $(function() {

                $("#acceptBtn").click(function(e){
                    var sdata = $('#contentForm').serialize();
                    $.ajax({
                        url: "<?php echo site_url('project/accept_submission'); ?>",
                        type: "POST",
                        data:sdata +'&accept=1',
                        success: function(data){
                            $('.buttons').remove();  
                            $('#baseModal-xs .modal-content').html(data);   
                            $('#baseModal-xs').modal("show");   

                        }
                    });
                    return false;
                });
            });

            </script>
  • It works locally but it does not run when live the project is still in development stage.
  • I don't know much about servers cause i only do coding, but in my company i was told to fix the issue and i have no clue my week end is going to be ruined :(
  • I had previously posted regarding the same issue but it was for different section even that was not fixed.
  • I don't know if the model part also can cause issue but i cant put the code cause i have passed to limit of the question size

In the view part i had added a extra closing brace which had no opening brace i removed that brace and Wa-lah it worked :).