HTML loaded image goes away after refresh

So this is a weird phenomenon I've never experienced in that I have an HTML form on image upload (exactly the one on W3). It does it's job properly when clicked and pushes the user profile picture into a folder while saving the name of the file on a database. Underneath the upload, I have a little image tag that spits out the uploaded profile picture. The end goal is for that profile picture to be displayed on the page constantly while the session exists. When uploaded, it works perfectly fine and the profile picture appears. After one refresh, the image can't be found and the alt="blank" takes over. The location still stays proper in the database so I don't think that's the issue. Is there an error? Do I need to use JS onload? Does the image tag only work once? Please help and thank you for taking the time to read this.

PHP:

echo '<img src="'.$loaded_profile_picture.'"id="HOMEPROFILE" alt="blank" style="width:128px;height:128px">';
//$loaded_profile_picture has the value uploads/photo.jpg

Classes.php:

    public function addProfilePicture(){
        include_once "conn.php";
        $sql=$dbh->prepare("UPDATE users SET UserProfilePicture=:UserProfilePicture WHERE UserName=:UserName;");
        $sql->execute(array(
            'UserProfilePicture'=>$this->getUserProfilePicture(),
            'UserName'=>$_SESSION['UserName'],
            ));
    }

Image Upload (Might be the culprit):

        if($uploadsuccess&&move_uploaded_file($_FILES['fileToUpload']['tmp_name'], $target_file)){
                    echo " The file ".basename($_FILES['fileToUpload']['name'])." has been uploaded.";
                    $user->setUserProfilePicture($target_file);
                    $user->addProfilePicture();
                    if($user->getUserProfilePicture()!=NULL){
                        echo '<img src="'.$target_file. '" alt="nom">'; 
                    }
        }