Am trying to change the album cover of an mp3 file during upload in wordpress. I facing the same error message “Unexpected response from the server. The file may have been uploaded successfully. Check in the Media Library or reload the page.”.

    <?php
require_once 'getID3-master/getid3/getid3.php';

function update_mp3_metadata($upload)
{
    $file_path = $upload['file'];

    // Check if getID3 is loaded correctly
    if ( !class_exists('getID3') ) {
        echo 'getID3 library not found.';
        return $upload;
    }

    $getID3 = new getID3;
    $tagWriter = new getid3_writetags;

    // Check if the uploaded file is an MP3
    if ( mime_content_type($file_path) === 'audio/mpeg' ) {

        $coverImagePath = get_template_directory() . '/public/images/yt.jpg';

        // Check if the cover image path is correct and file exists
        if ( !file_exists($coverImagePath) ) {
            echo "Cover image not found at: $coverImagePath";
            return $upload;
        }

        $tagData['attached_picture'][0] = [
            'data' => file_get_contents($coverImagePath),
            'picturetypeid' => 3,
            'description' => 'Cover',
            'mime' => 'image/jpeg',
        ];

        $tagWriter->filename = $file_path;
        $tagWriter->tagformats = ['id3v2.3'];
        $tagWriter->overwrite_tags = true;
        $tagWriter->tag_encoding = 'UTF-8';
        $tagWriter->tag_data = $tagData;

        if ( $tagWriter->WriteTags() ) {
            echo 'Tags written successfully.';
        } else {
            echo "Couldn't write tags: " . implode(', ', $tagWriter->errors);
        }
    }

    return $upload;
}

add_filter('wp_handle_upload', 'update_mp3_metadata');
?>

I started with the getId3 library included in WordPress in the “includes/ID3” directory, there’s no write.php file there. I thought that was the problem. Am using the downloaded library but still facing the same problem.