funtion checklogin not working on cpanel but work localhost

I built this web app, now the login and some stuff work fine but my session is messing with me. Like I have a file name checklogin.php with these code;

<?php
session_start();
include('includes/dbconnection.php');
function check_login()
{
    if(strlen($_SESSION['admincoj'])==0)
    {   
        $host = $_SERVER['HTTP_HOST'];
        $uri  = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
        $extra="index.php";     
        $_SESSION["id"]="";
        header("Location: http://$host$uri/$extra");
    }
}
?>   

This works perfectly on my localhost but not on cpanel. I noticed that if your have the dashboard directory, you can skip the login and move to the dashboard but not so on Localhost. Then some information that needs the admin session generated also wouldnt show. For example this code is a cut from the dashboard.

<nav class="sidebar sidebar-offcanvas" id="sidebar">
    <ul class="nav">
        <li class="nav-item nav-profile">
            <?php
            $aid=$_SESSION['admincoj'];
            $sql="SELECT * from  tbladmin where ID=:aid";
            $query = $dbh -> prepare($sql);
            $query->bindParam(':aid',$aid,PDO::PARAM_STR);
            $query->execute();
            $results=$query->fetchAll(PDO::FETCH_OBJ);
            $cnt=1;
            if($query->rowCount() > 0)
            { 
                foreach($results as $row)
                {
                    ?>
                    <a href="#" class="nav-link">
                        <div class="nav-profile-image">
                            <?php 
                            if($row->Photo=="avatar15.jpg")
                            { 
                                ?>
                                <img class="img-avatar" src="assets/img/avatars/avatar15.jpg" alt="">
                                <?php 
                            } else { 
                                ?>
                                <img class="img-avatar" src="profileimages/<?php  echo $row->Photo;?>" alt=""> 
                                <?php 
                            } ?>
                            <span class="login-status busy"></span>
                            <!--change to offline or busy as needed-->
                        </div>
                        <div class="nav-profile-text d-flex flex-column">
                            <span class="font-weight-bold mb-2"><?php  echo $row->FirstName;?> <?php  echo $row->LastName;?></span>
                            <?php
                            $sql="SELECT * from  tblcompany";
                            $query = $dbh -> prepare($sql);
                            $query->bindParam(':aid',$companyname,PDO::PARAM_STR);
                            $query->execute();
                            $results=$query->fetchAll(PDO::FETCH_OBJ);
                            $cnt=1;
                            if($query->rowCount() > 0)
                            {
                                foreach($results as $row)
                                {  
                                    ?>
                                    <span class="text-secondary text-small"><?php  echo $row->companyname;?></span>
                                    <?php
                                }
                            }?>
                        </div>
                    </a>
                    <?php 
                }
            } ?>
        </li>
        <li class="nav-item">
            <a class="nav-link" href="dashboard.php">
                <span class="menu-title">Dashboard</span>
                <i class="mdi mdi-home menu-icon"></i>
            </a>
        </li>
        <li class="nav-item">
            <a class="nav-link" data-toggle="collapse" href="#ui-basic" aria-expanded="false" aria-controls="ui-basic">
                <span class="menu-title">Christian management</span>
                <i class="menu-arrow"></i>
                <i class="mdi mdi-archive menu-icon"></i>
            </a>
            <div class="collapse" id="ui-basic">
                <ul class="nav flex-column sub-menu">
                    <li class="nav-item"> <a class="nav-link" href="registerchristian.php">Manage christians</a></li>
                    <li class="nav-item"> <a class="nav-link" href="attendancy.php">Attendancy</a></li>
                </ul>
            </div>
        </li>
        <li class="nav-item">
            <a class="nav-link" data-toggle="collapse" href="#ui-basic2" aria-expanded="false" aria-controls="ui-basic">
                <span class="menu-title">Finance management</span>
                <i class="menu-arrow"></i>
                <i class="mdi mdi-archive menu-icon"></i>
            </a>
            <div class="collapse" id="ui-basic2">
                <ul class="nav flex-column sub-menu">
                    <li class="nav-item"> <a class="nav-link" href="bankdeposit.php"> Bank Deposit</a></li>
                     <li class="nav-item"> <a class="nav-link" href="petty_cash.php">Bank Withdraw</a></li>
                    <li class="nav-item"> <a class="nav-link" href="promises.php"> Promises</a></li>
                    <li class="nav-item"> <a class="nav-link" href="add_expense.php">Expenses</a></li>
                    <li class="nav-item"> <a class="nav-link" href="offertory.php"> Offertories</a></li>
                </ul>
            </div>
        </li>
        <li class="nav-item">
            <a class="nav-link" data-toggle="collapse" href="#companymanagement" aria-expanded="false" aria-controls="general-pages">
                <span class="menu-title">Church management</span>
                <i class="menu-arrow"></i>
                <i class="mdi mdi-bank menu-icon"></i>
            </a>
            <div class="collapse" id="companymanagement">
                <ul class="nav flex-column sub-menu">
                    <li class="nav-item"> <a class="nav-link" href="churchprofile.php">Church profile </a></li>
                    
                    <li class="nav-item"> <a class="nav-link" href="store.php"> Manage store</a></li>

                </ul>
            </div>
        </li>
        <li class="nav-item">
            <a class="nav-link" href="notifications.php">
                <span class="menu-title">Notifications</span>
                <i class="mdi mdi-book menu-icon"></i>
            </a>
        </li>
        <li class="nav-item">
            <a class="nav-link" data-toggle="collapse" href="#sms" aria-expanded="false" aria-controls="general-pages">
                <span class="menu-title">SMS</span>
                <i class="menu-arrow"></i>
                <i class="mdi mdi-send menu-icon"></i>
            </a>
            <div class="collapse" id="sms">
                <ul class="nav flex-column sub-menu">
                    <li class="nav-item"> <a class="nav-link" href="sendsmslist.php">Send SMS </a></li>
                    <!-- 
                    <li class="nav-item"> <a class="nav-link" href="#"> SMS Templates</a></li>
 -->
                </ul>
            </div>
        </li>
        <?php
        $aid=$_SESSION['odmsaid'];
        $sql="SELECT * from  tbladmin where ID=:aid";
        $query = $dbh -> prepare($sql);
        $query->bindParam(':aid',$aid,PDO::PARAM_STR);
        $query->execute();
        $results=$query->fetchAll(PDO::FETCH_OBJ);
        $cnt=1;
        if($query->rowCount() > 0)
        {  
            foreach($results as $row)
            { 
                if($row->AdminName=="Admin"  )
                { 
                    ?>
                    <li class="nav-item">
                        <a class="nav-link" data-toggle="collapse" href="#general-pages" aria-expanded="false" aria-controls="general-pages">
                            <span class="menu-title">User management</span>
                            <i class="menu-arrow"></i>
                            <i class="mdi mdi-account-multiple menu-icon"></i>
                        </a>
                        <div class="collapse" id="general-pages">

                            <ul class="nav flex-column sub-menu">
                                <li class="nav-item"> <a class="nav-link" href="userregister.php">Register user </a></li> <?php
                                $aid=$_SESSION['odmsaid'];
                                $sql="SELECT * from  tbladmin where ID=:aid";
                                $query = $dbh -> prepare($sql);
                                $query->bindParam(':aid',$aid,PDO::PARAM_STR);
                                $query->execute();
                                $results=$query->fetchAll(PDO::FETCH_OBJ);
                                $cnt=1;
                                if($query->rowCount() > 0)
                                {  
                                    foreach($results as $row)
                                    { 
                                        if($row->AdminName=="Admin" )
                                        { 
                                            ?>
                                            <li class="nav-item"> <a class="nav-link" href="user_permission.php"> User permissions</a></li>


                                            <?php 
                                        } 
                                    }
                                } ?> 
                            </ul>

                        </div>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" data-toggle="collapse" href="#configuration" aria-expanded="false" aria-controls="ui-basic">
                            <span class="menu-title">Settings</span>
                            <i class="menu-arrow"></i>
                            <i class="mdi mdi-settings menu-icon"></i>
                        </a>
                        <div class="collapse" id="configuration">
                            <ul class="nav flex-column sub-menu">
                                <li class="nav-item"> <a class="nav-link" href="manage_expense.php">Expenses</a></li>
                                <!-- <li class="nav-item"> <a class="nav-link" href="#">Designation</a></li> -->
                            </ul>
                        </div>
                    </li>
                    <?php 
                } 
            }
        } ?> 
        <li class="nav-item">
            <a class="nav-link" data-toggle="collapse" href="#reports" aria-expanded="false" aria-controls="ui-basic">
                <span class="menu-title">Reports</span>
                <i class="menu-arrow"></i>
                <i class="mdi mdi-database menu-icon"></i>
            </a>
            <div class="collapse" id="reports">
                <ul class="nav flex-column sub-menu">
                    <li class="nav-item"> <a class="nav-link" href="generalledger.php">General Ledger</a></li>
                    <li class="nav-item"> <a class="nav-link" href="expense_reports.php">Expense reports</a></li>
                    <li class="nav-item"> <a class="nav-link" href="btndates_reports_ds.php">Btn dates reports</a></li>
                </ul>
            </div>
        </li>
    </ul>
</nav>

Every where we have the

<?php
            $aid=$_SESSION['odmsaid'];
            $sql="SELECT * from  tbladmin where ID=:aid";
            $query = $dbh -> prepare($sql);
            $query->bindParam(':aid',$aid,PDO::PARAM_STR);
            $query->execute();
            $results=$query->fetchAll(PDO::FETCH_OBJ);
            $cnt=1;
            if($query->rowCount() > 0)
            {  
                foreach($results as $row)
                { 
                    if($row->AdminName=="Admin"  )
                    { 
                        ?>

doesnt work on cpanel but does on local host.

source https://stackoverflow.com/questions/72691480/funtion-checklogin-not-working-on-cpanel-but-work-localhost