Serialization of 'Closure' is not allowed

[alancwoo]

Recently, with:

1. WPGraphQL Smart Cache 1.3.2
2. WPGraphQL 1.26.0
3. WPGraphQL for ACF 2.2.0

I am getting a NO SCHEMA AVAILABLE error in the IDE and also seeing errors in the console: Serialization of 'Closure' is not allowed

It seemed to work a few weeks ago, I also tried downgrading several versions to WPGraphQL 1.24.0 and `WPGraphQL Smart Cache 1.3.01 to no avail. Oddly, it worked a few weeks ago and no new plugins were introduced since. Also tried using a default theme with no custom types or taxonomies.

This occurs when the Object cache is enabled.

[catative]

Hellow, @alancwoo. I think this might be helpful for you: #298