Warning: call_user_func_array() expects parameter 1 to be a valid callback

[Mike Hemberger]

Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'PAnD' not found in /Users/JiveDig/ValetSites/merlin/wp-includes/class-wp-hook.php on line 286

When I remove dependency installer I don't see this. Using the latest from https://raw.githubusercontent.com/afragen/wp-dependency-installer/master/wp-dependency-installer.php, which accordingly to the Releases is 1.4.10

Similar: afragen/git-updater#453

[Mike Hemberger]

FWIW, I'm doing this via my theme's functions.php file:

require_once 'includes/dependencies/wp-dependency-installer.php';
WP_Dependency_Installer::instance()->run( dirname( __FILE__ ) . '/includes/dependencies' );

And if I run it later it goes away, but not sure of the consequences:

require_once 'includes/dependencies/wp-dependency-installer.php';
add_action( 'admin_init', function() {
	WP_Dependency_Installer::instance()->run( dirname( __FILE__ ) . '/includes/dependencies' );
});

[Mike Hemberger]

Update: Using via Composer does work. Probably better if I do it that way anyway.

WP_Dependency_Installer::instance()->run( __DIR__ );```

[Andy Fragen]

Designed to run through composer.

[Mike Hemberger]

K, if it's not meant to work any other way than with composer (my current themes are not using composer) then I'll close. Updating all my themes now with this.

[Andy Fragen]

It really does need composer as the dependencies might also require composer’s autoloader.

[Andy Fragen]

There’s probably a way to make it work without composer but if there are issues it will be difficult to trace.

[Mike Hemberger]

All good. My old themes (currently live on quite a few sites) have the older non-composer setup and it has worked well. Only issue would be if they use another plugin that uses the newer version and possibly hit a conflict. Unlikely though.