Bug Report: method_exists(): Argument #1 must be of type object|string, array given on PHP 8.4

[DMNCDLPRT]

Livewire PowerGrid version

v6.4

Livewire version

v3.1

Laravel version

v12.31.1

Which PHP version are you using?

PHP 8.4

Which Theme are you using?

Tailwind

Have you published the resource files and customized them? (php artisan vendor:publish)

Yes

What is the problem?

After upgrading to PHP 8.4, using PowerGrid with a datasource() that accidentally returns a collection or array instead of an Eloquent query builder now throws the following fatal error:

method_exists(): Argument #1 ($object_or_class) must be of type object|string, array given

This was not crashing under earlier PHP versions (PHP 8.2 / 8.3), but PHP 8.4 appears to be stricter and fails immediately.

Code snippets

1. Create a PowerGrid table component.
2. In datasource(), mistakenly return a collection instead of a query:

public function datasource()
{
    return \App\Models\Transaction::with('user')->get(); // returns Collection
}

1. Load the table in the browser.
2. Observe the crash:

method_exists(): Argument #1 must be of type object|string, array given

How do you expect it to work?

Ideally PowerGrid should gracefully handle this case, either:

• by throwing a more descriptive exception (e.g. "datasource() must return an Eloquent Builder, not a Collection"),
• or by internally converting collections into something usable.

Please confirm (incomplete submissions will not be addressed)

• I have provided easy and step-by-step instructions to reproduce the bug.
• I have provided code samples as text and NOT images.
• I understand my bug report will be removed if I haven't met the criteria above.

[EmilioVar]

I solved it by running the following command:

php artisan optimize:clear

It seems that the error occurs because a cached file tries to access a method which is not available, cleaning it is solved.