Error with move_uploaded_file in xampp

I am trying to upload an img to a folder but I get an error, I do not know if it is the fault of the xampp or what the problem may be I have looked at posted errors but none of them have worked or I have not been able to apply them: /

<?php 

        if( $_POST ){

            //ss
            extract( $_POST, EXTR_OVERWRITE );

            if  (!file_exists("fotos")){
                mkdir ( "fotos","0777");
            }

            $nombre = strtolower($nombre);

            $dirSubida = $_SERVER['DOCUMENT_ROOT']."/fotos/$nombre/";

            if  ( !file_exists ("fotos")){
                mkdir( $dirSubida, 0777);
            }

            $foto = $_FILES['foto'];
            $nombreFoto = $foto['name'];
            $nombreTmp = $foto{'tmp_name'};
            $rutaSubida = "{$dirSubida}profile.jpg";
            $extArchivo = preg_replace('/image\//', '', $foto['type']);

            if ($extArchivo == 'jpeg' || $extArchivo == 'png'){
                if ( move_uploaded_file ($nombreTmp, $rutaSubida)){
                    echo "<img class='img-responsive' src='$rutaSubida' alt=''>";
                }

            }

        }

        ?>

This is the error:

  

Warning: move_uploaded_file (C: /xampp/htdocs/fotos/qwe/profile.jpg): failed to   open stream: No such file or directory in   C: \ xampp \ htdocs \ backend \ register.php on line 39

     

Warning: move_uploaded_file (): Unable to move 'C: \ xampp \ tmp \ php17A8.tmp' to 'C: /xampp/htdocs/fotos/qwe/profile.jpg'   in C: \ xampp \ htdocs \ backend \ register.php on line 39