move_uploaded_file(): Unable to move 'C:\xampp\tmp\php39B2.tmp' to 'upload/

I'm trying to upload a picture but it gave me an error related to XAMPP. The image I was trying was a jpg image so I don't think that is the issue. I am not sure what I did wrong or what to rearrange in order for the image to be accepted.

    
    if(isset($_FILES["image"]) && $_FILES["image"]["error"] == 0){
        $allowed = array("jpg" => "image/jpg", "jpeg" => "image/jpeg", "png" => "image/png");
        $filename = $_FILES["image"]["name"];
        $filetype = $_FILES["image"]["type"];
        $filesize = $_FILES["image"]["size"];

        
        $ext = pathinfo($filename, PATHINFO_EXTENSION);
        if(!array_key_exists($ext, $allowed)) die("Error: Please select a valid file format.");
     
       
        $maxsize = 10 * 1024 * 1024;
        if($filesize > $maxsize) die("Error: File size is larger than the allowed limit.");
     
       
        if(in_array($filetype, $allowed)){
            
            if(file_exists("upload/" . $filename)){
                echo $filename . " is already exists.";
            } else{
                if(move_uploaded_file($_FILES["image"]["tmp_name"], "upload/" . $filename)){
 
                    $sql="INSERT INTO images(file,type,size) VALUES('$filename','$filetype','$filesize')";
                     
                    mysqli_query($conn,$sql);
 
                    echo "Your file was uploaded successfully.";
                }else{
 
                   echo "File is not uploaded";
                }
                 
            } 
        } else{
            echo "Error: There was a problem uploading your file. Please try again."; 
        }
    } else{
        echo "Error: " . $_FILES["image"]["error"];
    }
}```

source https://stackoverflow.com/questions/71399828/move-uploaded-file-unable-to-move-c-xampp-tmp-php39b2-tmp-to-upload