mediaelement-and-player.min.js javascript errors on Add New Post

[bluesaphyer]

I am getting javascript errors on the Add New Post page after upgrading to 4.9.1. I've seen other tickets with similar errors, but the solutions do not seem to help. I have disabled all plugins, set the theme to twenty-twelve, and the language is set to U.S. English. The errors are preventing being able to switch between text and visual editors.

mediaelement-and-player.min.js Failed to load resource: the server responded with a status of 404 (Not Found)
load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=4.9.1:9 JQMIGRATE: Migrate is installed, version 1.4.1
mediaelement-and-player.min.js Failed to load resource: the server responded with a status of 404 (Not Found)
mediaelement-migrate.min.js:1 Uncaught ReferenceError: mejs is not defined
    at mediaelement-migrate.min.js:1
    at mediaelement-migrate.min.js:1
load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,suggest,wp-ajax-response,jquery-color,wp-lists,jquery-ui-core,jquery-ui-widget,j&load[]=query-ui-mouse,jquery-ui-sortable,postbox,jquery-ui-position,jquery-ui-menu,wp-a11y,jquery-ui-autocomplete,tags-suggest,tags-box&load[]=,underscore,word-count,post,editor-expand,thickbox,shortcode,backbone,wp-util,wp-backbone,media-models,wp-plupload,wp-mediaeleme&load[]=nt,wp-api-request,media-views,media-editor,media-audiovideo,mce-view,imgareaselect,image-edit,svg-painter,wp-auth-check,editor,q&load[]=uicktags,wplink,media-upload,wp-embed&ver=4.9.1:449 Uncaught TypeError: b(...).not(...).filter(...).mediaelementplayer is not a function
    at HTMLDocument.a (load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,suggest,wp-ajax-response,jquery-color,wp-lists,jquery-ui-core,jquery-ui-widget,j&load[]=query-ui-mouse,jquery-ui-sortable,postbox,jquery-ui-position,jquery-ui-menu,wp-a11y,jquery-ui-autocomplete,tags-suggest,tags-box&load[]=,underscore,word-count,post,editor-expand,thickbox,shortcode,backbone,wp-util,wp-backbone,media-models,wp-plupload,wp-mediaeleme&load[]=nt,wp-api-request,media-views,media-editor,media-audiovideo,mce-view,imgareaselect,image-edit,svg-painter,wp-auth-check,editor,q&load[]=uicktags,wplink,media-upload,wp-embed&ver=4.9.1:449)
    at i (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=4.9.1:2)
    at Object.fireWith [as resolveWith] (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=4.9.1:2)
    at Function.ready (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=4.9.1:2)
    at HTMLDocument.K (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=4.9.1:2)

Any help you can provide is appreciated.

[dd32]

Hi @bluesaphyer and welcome to Trac.

This doesn't seem like a bug in WordPress, but quite possibly caused by a failed update - as that file should definitely exist.

I'd recommend reinstalling WordPress's files by going to Dashboard -> Updates and clicking reinstall - you won't loose any data, it's the same as a regular update, it just ensures that all files are present and at the correct version.

If that doesn't resolve the issue, as the file should exist, you may need to seek support from your host or from the ​WordPress.org support forums.

I'm marking this issue as invalid as it doesn't appear to be a problem with WordPress - please note that you can continue to reply to a closed ticket if needed.

[bluesaphyer]

We have 4 separate installs that this is happening on, it doesn't seem like a failed update would happen on all of them.

[bluesaphyer]

We reinstalled all of our instances and the same problem is still happening.

[dd32]

@bluesaphyer Assuming you've not already corrected this.

mediaelement-and-player.min.js Failed to load resource: the server responded with a status of 404 (Not Found)

Unfortunately your webserver is responding with a "Sorry, I can't find that file". You'll need to contact your host if reinstalling WordPress didn't help.

I'm reclosing this as invalid as there's no other reports from other users about this. If you have no luck with your hosts support team, the ​Support Forum Volunteers may be able to help.

[bluesaphyer]

@dd32 I have not been able to correct this. The file exists on the file system, so it seems wordpress is failing to load it for some reason. I believe the issue is related to #42574 and #42750 but none of the patches seem to work for me. The only language setting I have available in the admin is English (United States), so I am not able to test selecting a different language.

[dd32]

Replying to bluesaphyer:

@dd32 I have not been able to correct this. The file exists on the file system, so it seems wordpress is failing to load it for some reason.

The reason stated in your ticket is mediaelement-and-player.min.js Failed to load resource: the server responded with a status of 404 (Not Found) - specifically meaning that the web server (not WordPress) has rejected the browsers attempt to load the file, by saying the file doesn't exist. That's unfortunately out of the control of WordPress, and means that this isn't a WordPress bug unfortunately.

FYI @bluesaphyer I've contacted you directly on your WordPress.org email with an offer of help.

[alexlii]

I have the same issue with the version 4.9.1

If ssl is installed on site, This error Will cause the videos does not play in safari, but iwill play well with chrome and Firefox.

I searched a lot, it seems Jquery related.

Alex

[alexlii]

This is definitely a bug.

it only happen with Safari on the site with SSL installed.

here is the error message: Media error: Format(s) not supported or source(s) not foundDownload File:

The author of mediaelement post a notification at ​https://github.com/mediaelement/mediaelement

• IMPORTANT NOTE for Safari users (Jun 8, 2017)

Since Sierra version, autoplay policies have changed. You may experience an error if you try to execute play programatically or via autoplay attribute with MediaElement, unless muted attribute is specified.

For more information, read ​https://webkit.org/blog/7734/auto-play-policy-changes-for-macos/

and here is Apple policy: ​https://webkit.org/blog/7734/auto-play-policy-changes-for-macos/

Would you please let me know how to resolve?

Alex

[joedolson]

Option to mute mediaelement videos added in r54128, against #54788. That update effectively resolves this issue, which is a autoplay policy. We can't force the autoplay to work if it's against browser policies, but you can now set the muted property, so that the video will play.