TypeError: Drupal\Component\Utility\NestedArray::getValue(): Argument #1 ($array) must be of type array

mohd sahzad → made their first commit to this issue’s fork.

Hi 21kpiyush, I think you're trying to insert Layout Builder inline blocks in EBT Block. It's not supported by Block Field module:
https://www.drupal.org/project/block_field/issues/3191907 →

I faced with this problem, but I don't think it's possible to solve with Block Field module, because Inline Block doesn't have Plugin ID (or something related to Plugin system) as usual Blocks have.

As I understand Layout Builder hardly support reusable blocks too:
https://www.drupal.org/project/layout_builder_blocks/issues/3424204 📌 Compatibility with Re-usable Layout Builder Blocks Postponed
https://www.drupal.org/project/drupal/issues/2999491 ✨ Add reusable option to inline block creation Needs review

It's not convinient, but you can create block first in Block Library and re-use it from there with EBT Block.

I will put this ticket in postponed, because it's definitely a bug, but I can't fix it in EBT Block module, the problem is deeper in Block Field and Layout Builder modules.

Ping me if you will struggling with adding blocks via Block Library.