Results are not displaying in view - php

Question

Recently, I discovered that the exam scores of students are not displaying anymore in a particular class (PRE-NURSERY).
Going back to the form where results are added, I see that the results have been repopulated and are already stored in the database.
However, they are not been displayed in the view. I wonder what must be wrong.
model
public function getRecentmtGradesRN($id)
{
$this->db->select('*');
$this->db->where('student_id', $id);
return $this->db->get('mtscores_rn')->result();
}
controller
public function view($id)
{
if (!$this->rbac->hasPrivilege('student', 'can_view')) {
access_denied();
}
$data['title'] = 'Student Details';
$student = $this->student_model->get($id);
$gradeList = $this->grade_model->get();
if($class_id == 2 || $class_id == 3) //see here
{
$subjectmtScores = $this->student_model->getRecentmtGradesRN($id);
}
else
{
$subjectmtScores = $this->student_model->getRecentmtGrades($id);
}
$studentSession = $this->student_model->getStudentSession($id);
$timeline = $this->timeline_model->getStudentTimeline($id, $status = '');
$data["timeline_list"] = $timeline;
$student_session_id = $studentSession["student_session_id"];
$student_session = $studentSession["session"];
$data['sch_setting'] = $this->sch_setting_detail;
$data['adm_auto_insert'] = $this->sch_setting_detail->adm_auto_insert;
$current_student_session = $this->student_model->get_studentsession($student['student_session_id']);
$data["session"] = $current_student_session["session"];
$student_due_fee = $this->studentfeemaster_model->getStudentFees($student['student_session_id']);
$student_discount_fee = $this->feediscount_model->getStudentFeesDiscount($student['student_session_id']);
$data['student_discount_fee'] = $student_discount_fee;
$data['student_due_fee'] = $student_due_fee;
$siblings = $this->student_model->getMySiblings($student['parent_id'], $student['id']);
$student_doc = $this->student_model->getstudentdoc($id);
$data['student_doc'] = $student_doc;
$data['student_doc_id'] = $id;
$category_list = $this->category_model->get();
$data['category_list'] = $category_list;
$data['gradeList'] = $gradeList;
$data['subjectmtScores'] = $subjectmtScores; //see here
//var_dump($subjectmtScores); die();
$data['student'] = $student;
$data['siblings'] = $siblings;
$class_section = $this->student_model->getClassSection($student["class_id"]);
$data["class_section"] = $class_section;
$session = $this->setting_model->getCurrentSession();
$studentlistbysection = $this->student_model->getStudentClassSection($student["class_id"], $session);
$data["studentlistbysection"] = $studentlistbysection;
$data['guardian_credential'] = $this->student_model->guardian_credential($student['parent_id']);
$data['reason'] = $this->disable_reason_model->get();
if ($student['is_active'] = 'no') {
$data['reason_data'] = $this->disable_reason_model->get($student['dis_reason']);
}
// //var_dump($data['teacher_comment']);
$this->load->view('layout/header', $data);
$this->load->view('student/studentShow', $data);
$this->load->view('layout/footer', $data);
}
view
<table class="table table-bordered" style="border: 1px solid black;">
<caption class="text-center">ACADEMIC PERFORMANCE</caption>
<thead>
<tr style="border: 1px solid black;">
<th style="border: 1px solid black; font-size:11px;width:120px;text-align:center;">
SUBJECTS
</th>
<th style="border: 1px solid black; font-size:11px;text-align:center;">CLASS
EXPECTATION
</th>
<th style="border: 1px solid black;font-size:11px;text-align:center;">MILESTONE
ACHIEVED
</th>
<th style="border: 1px solid black;font-size:11px;text-align:center;">REMARKS</th>
</tr>
</thead>
<tbody>
<?php $i = 1;
$total = 0;
$count = count($subjectmtScores);
foreach ($subjectmtScores as $value) { ?>
<?php
$mt_tot_score = $value->mt_ca1 + $value->mt_ca2 + $value->mt_ca3 + $value->mt_ca4 + $value->mt_affective + $value->mt_psychomotor + $value->mt_exam;
if ($mt_tot_score >= 80) {
$grade = 'A';
$remark = 'EXCELLENT';
} elseif ($mt_tot_score >= 70 && $mt_tot_score <= 79.99) {
$grade = 'B';
$remark = 'VERY GOOD';
} elseif ($mt_tot_score >= 60 && $mt_tot_score <= 69.99) {
$grade = 'C';
$remark = 'GOOD';
} elseif ($mt_tot_score >= 50 && $mt_tot_score <= 59.99) {
$grade = 'E';
$remark = 'PASS';
} elseif ($mt_tot_score >= 40 && $mt_tot_score <= 49.99) {
$grade = 'F';
$remark = 'FAIR';
} elseif ($mt_tot_score >= 0 && $mt_tot_score<= 39.99) {
$grade = 'FL';
$remark = 'FINAL LETTER GRADE';
}
?>
<?php
$total += $mt_tot_score;
?>
<tr style="border: 1px solid black;">
<td style="border: 1px solid black;font-size:12px;text-align:left;height:30px;"><?php echo $CI->GetSubjectNameWithID($value->subject_id); ?></td>
<td style="border: 1px solid black;font-size:12px;text-align:center;"><?php echo $value->mt_ca1; ?></td>
<td style="border: 1px solid black;font-size:12px;text-align:center;"><?php echo $value->mt_ca2; ?></td>
<td style="border: 1px solid black;font-size:12px;text-align:left;white-space:nowrap;"><?php echo $value->mt_ca3; ?></td>
</tr>
<?php $i++;
} ?>
</tbody style="
white-space: nowrap;
">
</table>