The issue was indeed related to the apache-airflow-providers-fab package, as suggested by @bcincy's comment.

Solution

• Edited my docker-compose.yaml file. Modified the _PIP_ADDITIONAL_REQUIREMENTS line within the environment: block to include the FAB provider version 2.0.2

x-airflow-common:
  &airflow-common
  # ... other common settings ...
  environment:
    &airflow-common-env
    # ... existing environment variables (including AIRFLOW__CORE__BASE_URL) ...

    # Modified this line to add the FAB provider package:
    _PIP_ADDITIONAL_REQUIREMENTS: ${_PIP_ADDITIONAL_REQUIREMENTS:-} apache-airflow-providers-fab==2.0.2

    # ... rest of environment variables ...

• Saved the docker-compose.yaml.
• Stopped the running containers and started them again to pick up the environment variable and install the package:

docker compose down
docker compose up -d