Problem w/ the auto-loader in 3.16.0

[pbiron]

I just updated to the newly released v3.16.0 and the site crashed w/ a WSOD. Appears there's a problem in the composer auto-loader in the new version

Warning: require(path-to-site/plugins/query-monitor/vendor/composer/../symfony/deprecation-contracts/function.php): Failed to open stream: No such file or directory in path-to-site/plugins/query-monitor/vendor/composer/autoload_real.php on line 42

Fatal error: Uncaught Error: Failed opening required 'path-to-site/plugins/query-monitor/vendor/composer/../symfony/deprecation-contracts/function.php' (include_path='.;C:\php\pear') in path-to-site/plugins/query-monitor/vendor/composer/autoload_real.php:42 Stack trace: #0 path-to-/site/plugins/query-monitor/vendor/composer/autoload_real.php(46): {closure}('6e3fae29631ef28...', 'path-to-site...') #1 path-to-site/plugins/query-monitor/vendor/autoload.php(25): ComposerAutoloaderInitad25d53a23099da4b0886b4f6754360e::getLoader() #2 path-to-site/plugins/query-monitor/wp-content/db.php(78): require_once('path-to-site...') #3 path-to-site/wp-includes/load.php(675): require_once('path-to-site...') #4 path-to-site/wp-settings.php(131): require_wp_db() #5 path-to-site/wp-config.php(105): require_once('path-to-site...') #6 path-to-site/wp-load.php(50): require_once('path-to-site...') #7 path-to-site/wp-admin/admin.php(34): require_once('path-to-site...') #8 path-to-site/wp-admin/plugins.php(10): require_once('path-to-site...') #9 {main} thrown in path-to-site/plugins/query-monitor/vendor/composer/autoload_real.php on line 42

[johnbillion]

This Composer configuration has been nothing but a nightmare. I need to find a way to make it determinate and testable.

[johnbillion]

I've shipped a fix for this directly to wordpress.org as 3.16.1 because evidently there is an issue with the Composer configuration in the build action here on GitHub.

[slackday]

Sorry but I get the same problem but for another file myclabs/deep-copy/src/DeepCopy/deep_copy.php

Warning: require(/app/web/app/plugins/query-monitor/vendor/composer/../myclabs/deep-copy/src/DeepCopy/deep_copy.php): Failed to open stream: No such file or directory in /app/web/app/plugins/query-monitor/vendor/composer/autoload_real.php on line 42

Fatal error: Uncaught Error: Failed opening required '/app/web/app/plugins/query-monitor/vendor/composer/../myclabs/deep-copy/src/DeepCopy/deep_copy.php' (include_path='.:/usr/share/php') in /app/web/app/plugins/query-monitor/vendor/composer/autoload_real.php:42 Stack trace: #0 /app/web/app/plugins/query-monitor/vendor/composer/autoload_real.php(46): {closure}() #1 /app/web/app/plugins/query-monitor/vendor/autoload.php(25): ComposerAutoloaderInitad25d53a23099da4b0886b4f6754360e::getLoader() #2 /app/web/app/plugins/query-monitor/query-monitor.php(56): require_once('...') #3 /app/web/wp/wp-settings.php(517): include_once('...') #4 /app/web/wp-config.php(10): require_once('...') #5 /app/web/wp/wp-load.php(55): require_once('...') #6 /app/web/wp/wp-blog-header.php(13): require_once('...') #7 /app/web/index.php(5): require('...') #8 {main} thrown in /app/web/app/plugins/query-monitor/vendor/composer/autoload_real.php on line 42

edit

3.16.1 was not available on wpackagist when I tested. Same problem as @pbiron now.

Thanks for looking into it so quickly @johnbillion :)

edit 2

Downgrade to 3.15 works

[pbiron]

unfortunately, 3.16.1 fatals as well, with a slightly different error message

Fatal error: Uncaught Error: Class "QM_Activation" not found in path-to-site/plugins/query-monitor/query-monitor.php:58

[johnbillion]

I think I need to get rid of the dependency on the Composer autoloader and ship my own. It's just a simple class mapping, so the rest of the Composer autoloading functionality isn't needed.

[pbiron]

I just cloned the repo to my local machine and did a composer dump-autoload from the command-line. And that seems to produce a usable auto-loader. The vendor dir resulting from that CLI (which has the working auto-loader) is attached here.

vendor.zip

[johnbillion]

Shipped 3.16.2 with that class map back in place. Bleugh.

[pbiron]

success: 3.16.2 works!

Thanx for jumping on this so quickly!

[jakeparis]

Not sure if it's worth making a new issue, but

• I have an autoloader-related problem
• in version 3.16.2

I am able to install/activate the plugin (via wp-cli) with no problem, but the site then throws a critical error:

PHP Fatal error:  Cannot declare class ComposerAutoloaderInitad25d53a23099da4b0886b4f6754360e, because
 the name is already in use in /var/www/html/example.com/wp-content/plugins/query-monitor/vendor/com
poser/autoload_real.php on line 5

I'm happy to split this out into a separate issue if that's better.

[johnbillion]

@jakeparis Yeah that's a separate issue, probably not related to this one. Can you try deleting the wp-content/db.php file? Then deactivate and reactivate QM.

More info here: https://wordpress.org/support/topic/fatal-error-cannot-declare-class-composerautoloader/

[jakeparis]

Yes, fixed it. Thank you for that reference.