Does WordPress deliberately block 48kHz .mp3’s from showing in Media Library

  • Unknown's avatar
    ante7 · Member ·

    Let me give you some background. I have a WordPress website that I uploaded some 48kHz .mp3’s some time ago. My project paused for a while and then I picked up again and wanted to upload some new music. however, that’s where I ran into the problem that WordPress displays an error when I upload .mp3’s which says:

    “Unexpected response form the server. The file may have been uploaded successfully. Check in the media library or reload the page”

    I had a tech support call recently and we disabled all plugins and were able to upload a 44.1Khz file. When we tried a 48kHz file the original error persisted. Then, when all the plugins were reactivated I could upload a 44.1kHz file. I then tried to re-upload one of the existing 48hHz files already on the site, and it didn’t work!? I used debug mode and can see there is some issue in some of the WordPress files, which I want to report to WordPress as a bug.

    188.214.10.15 – [25/May/2025:06:07:51 +0000] “POST /wp-admin/admin-ajax.php” 500 78 – 125735 1850248 0.001 12582912 0.00% 0.00% “/wp-admin/admin-ajax.php”
    188.214.10.15 – [25/May/2025:06:08:04 +0000] “GET /wp-admin/media-new.php” 500 0 – 125735 1850248 0.001 6291456 0.00% 0.00% “/wp-admin/media-new.php”
    188.214.10.15 – [25/May/2025:06:08:09 +0000] “GET /wp-admin/media-new.php” 500 0 – 125735 1850248 0.001 4194304 0.00% 0.00% “/wp-admin/media-new.php”
    188.214.10.15 – [25/May/2025:06:08:10 +0000] “GET /wp-admin/media-new.php” 500 0 – 125735 1850248 0.001 2097152 0.00% 0.00% “/wp-admin/media-new.php”
    188.214.10.15 – [25/May/2025:06:09:46 +0000] “GET /wp-admin/media-new.php” 200 0 – 125735 1850248 1.301 27262976 31.52% 9.99% “/wp-admin/media-new.php”

    [Sun May 25 05:59:06.562890 2025] [proxy_fcgi:error] [pid 1837518:tid 1837603] [client 188.214.10.15:0] AH01071: Got error ‘PHP message: PHP Warning:  Array to string conversion in /home/ [SNIP]  /public_html/wp-includes/kses.php on line 1807PHP message: PHP Fatal error:  Uncaught TypeError: str_contains(): Argument #1 ($haystack) must be of type string, array given in /home/ [SNIP]  /public_html/wp-includes/blocks.php:1984nStack trace:n#0 /home/ [SNIP]  /public_html/wp-includes/blocks.php(1984): str_contains()n#1 /home/ [SNIP]  /public_html/wp-includes/formatting.php(5209): filter_block_content()n#2 /home/ [SNIP]  /public_html/wp-includes/class-wp-hook.php(324): wp_pre_kses_block_attributes()n#3 /home/ [SNIP]  /public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()n#4 /home/ [SNIP]  /public_html/wp-includes/kses.php(948): apply_filters()n#5 /home/ [SNIP]  /public_html/wp-includes/kses.php(754): wp_kses_hook()n#6 /home/ [SNIP]  /public_html/wp-includes/kses.php(2234): wp_kses()n#7 /home/1390474.cloudwaysapps.com…’, referer: https://burnished-bronze.com/wp-admin/media-new.php

    By chance I looked in the SFTP and the files are there, but they don’t show in WordPress media library.

    The blog I need help with is: (visible only to logged in users)

  • Unknown's avatar
    staartmees · Member ·

    We can’t help as that site isn’t running on the wordpress.com platform – https://wordpress.com/site-profiler/http://www.burnished-bronze.com. You must take a look in the documentation at wordpress.org to solve this problem yourself.

  • Unknown's avatar
    adusman402 · Member ·

    Hi there,

    I took a look at your site and noticed that it isn’t hosted on WordPress.com. Instead, it is using the self-hosted version of WordPress with a different hosting provider. We specifically support sites built with WordPress technology that are hosted on WordPress.com. You can read more about the differences here:


    https://wordpress.com/support/com-vs-org/


    For further support, I recommend posting your question in the WordPress.org community forums, where issues related to the self-hosted version of WordPress are addressed. You can use the following link to get started

    https://wordpress.org/support/forum/how-to-and-troubleshooting/


    Also note that you can upload and use 48kHz .mp3 audio files on WordPress.com without any issues. If you ever consider switching to a more hands-off hosting experience, we offer free migrations to WordPress.com—a service that typically costs $500. You can learn more about this offer here: https://wordpress.com/support/request-a-free-migration/.

  • Unknown's avatar
    ante7 · Member ·

    Thanks for the advice @adusman402, apologies for posting on the wrong forum!

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