            return;
                        }

                        if (xhr.status < 400 && xhr.responseText) {
                            code.textContent = xhr.responseText;
                            Prism.highlightElement(code);
                            return;
                        }

                        if (xhr.status === 404) {
                            code.textContent = '✖ Error: File could not be found';
                            return;
                        }

             