Path 'admin/config/workflow/eca/add' throws fatal error

Issue information

From user: kunalkursija

Contribution record

Fork management

Problem/Motivation

On Drupal 9.2 installation, The path admin/config/workflow/eca/add throws below error:
Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "extension.path.resolver". in Drupal\Component\DependencyInjection\Container->get() (line 156 of core/lib/Drupal/Component/DependencyInjection/Container.php).

The problem is that the service extension.path.resolver was introduced from Drupal 9.3.x onwards, See change record - https://www.drupal.org/node/2940438.

Steps to reproduce

• Enable ECA module
• Enable ECA content module
• Enable ECA UI module
• Go to admin/config/workflow/eca
• Click the link 'Add new model'
• You should now see the fatal error.

Proposed resolution

We could choose to do one of the below:

• The module is currently installable with any version of Drupal 9(core_version_requirement: ^9 || ^10). We could change the requirement to ^9.3 || ^10
• OR, We could have a fallback code to support older versions of Drupal 9. (This doesn't make sense as chances are slim that people who are Drupal version < 9.3 are using this module because of fatal errors)

Remaining tasks

User interface changes

API changes

Data model changes