The file you are trying to upload might be too large.

This is a generic error displayed when a file upload fails.

1. Please verify through phpinfo() (or similar) that upload_max_filesize is larger than the file you're trying to upload. Also, ensure that post_max_size is larger than upload_max_filesize and that your web server doesn't restrict the size of the request, e.g. through client_max_body_size or similar.

2. Check both your browser console for any error messages(Ctrl+Shift+J in Chrome – must be opened before uploading) and your web server's error_log file.

3. Check that your web server has write access to the files or data folder it uses for uploads.

Ah ok, then there's something wrong with the data returned by the server and it's probably not related to upload_max_filesize. Do you see any messages in the web server's error_log file?

You could try opening the Network tab from the Console to see details for the request that is failing. It would be nice to know what the Response says. 

Sorry, I missed it.

It seems you're missing one of the database tables, so that means something must have gone wrong during the update. What database software are you using?

The easiest way to fix this is just to create the table manually, you can do so by running the following query in your database admin tool:

CREATE TABLE wp_h5p_tmpfiles (
  id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  path VARCHAR(255) NOT NULL,
  created_at INT UNSIGNED NOT NULL,
  PRIMARY KEY  (id),
  KEY created_at (created_at)
);

After doing so, uploading files should work.

I just had the same problem runing MariaDB through docker. While installing h5p I see some complaint of the installer:

which seems to be related to this http://stackoverflow.com/questions/1814532/1071-specified-key-was-too-lo...

Creating the table manually also made the fix for me. Thanks.

Hello,

I get the same error when using Dictation and use the integrated sound recorder. When I record sound < 10 seconds, the file is well uploaded, but if I record a longer audio, ex. 15 seconds, I get this error (file might be too large).

My upload limit is 16 MB so it is not linked to the upload size limit.

As I can upload smaller files, it is not linked to write access rights.

Looking at the console in Chrome, when trying to insert the newly recorded audio of 15 seconds, I get the following errors:

SyntaxError: Unexpected token < in JSON at position 0
at JSON.parse (<anonymous>)
at XMLHttpRequest.request.onload(https://wp.mywebsitename.com/wp-content/plugins/h5p/h5p-editor-php-libra...)

Any clue to help me?

Thanks