🇬🇧United Kingdom Rotekian
This fixed things for me.
🐛 | Group | Drupal\group\Entity\Storage\GroupRoleStorage::loadByUserAndGroup(): Argument #1 ($account) must be of type Drupal\Core\Session\AccountInterface, null
🇬🇧United Kingdom Rotekian
For the fix in #4: $group_role_storage->loadByUserAndGroup only has 3 arguments.
It works without: $this->getEntity()
🇬🇧United Kingdom Rotekian
Rotekian → created an issue.