Error: Call to a member function hasField() on null in ebt_core_preprocess_block()

Sorry.
Problem/Motivation
Error: Call to a member function hasField() on null in ebt_cta_preprocess_block() (line 261 of ebt_core.module)

You are right, it's something new. I added a fix in this new release:
https://www.drupal.org/project/ebt_core/releases/1.4.35 →

You need to update EBT Accordion module with dependencies:
composer update drupal/ebt_accordion -W