autoloader can't find Podlove\Webvtt\Parser

[eteubert]

Sometimes the autoloader can't find the Class 'Podlove\Webvtt\Parser'.

I used release 3.1.18 locally and it works.
On podlovers.org (and other user reports) the error occurs.

I've been digging on podlovers.org for ~an hour but no idea yet why the class isn't found. composer autoloader files seem fine.

source: https://sendegate.de/t/upload-von-transcripts-nicht-moeglich/12560

Example error log

PHP Fatal error:  Uncaught Error: Class 'Podlove\Webvtt\Parser' not found in /var/www/html/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/modules/transcripts/transcripts.php:263
Stack trace:
#0 /var/www/html/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/modules/transcripts/transcripts.php(182): Podlove\Modules\Transcripts\Transcripts::parse_and_import_webvtt(Object(Podlove\Model\Episode), 'WEBVTT\n\n00:00:0...')
#1 /var/www/html/wp-includes/class-wp-hook.php(287): Podlove\Modules\Transcripts\Transcripts->ajax_transcript_import('')
#2 /var/www/html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)
#3 /var/www/html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#4 /var/www/html/wp-admin/admin-ajax.php(176): do_action('wp_ajax_podlove...')
#5 {main}
  thrown in /var/www/html/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/modules/transcripts/transcripts.php on line 263
[23-Nov-2020 20:29:57 UTC] Array
(
    [message] => Class Autoload failed for "Parser"
    [attempts] => Array
        (
            [0] => /var/www/html/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/webvtt/parser.php
        )

    [trace] => Array
        (
            [0] => podlove_autoloader
            [1] => spl_autoload_call
            [2] => parse_and_import_webvtt
            [3] => ajax_transcript_import
            [4] => apply_filters
            [5] => do_action
            [6] => do_action
        )

)

[eteubert]

Unconfirmed suspicion: the class file is parser.php but according to PSR-0 it should be Parser.php -- so it would work on case-insensitive file systems and break on case-sensitive file systems.

Since PSR-0 is deprecated, I should upgrade the webvtt package to PSR-4 and see if that resolves the issue.

[benhartwich]

I can confirm this issue.

[eteubert]

fixed in 3.2.0