Ansible attempting to connect to two different machines (failed)

Question

I have the following code which runs on localhost (linux OS), but needs to delegate some actions to a windows server. When I run the playbook, I give in input the vault folder which contains the credentials to connect to the windows server. The problem is that, on the "rescue" part, I call a task called error_thrower.yml which requires a connection via SSH to localhost. At this part, I have an error because it does not find the right credentials on the vault to connect to localhost which has a Linux OS. The error : fatal: [localhost -> localhost]: UNREACHABLE! =>.

- name: Disk Saturation
  hosts: localhost
  gather_facts: no

  tasks:
    - name: 'Actions on the server'
      delegate_to: "{{ target }}" #Windows server
      block:
        - name: 'Server connection test'
          win_ping:
          register: test_connection
          ignore_errors: yes
          ignore_unreachable: yes

        - name: 'Check total space of the disk'
          ansible.windows.win_shell: "Get-Volume -DriveLetter {{ partition_name }} | Select-Object Size | ConvertTo-Json"
          register: totalspace

      rescue: 'Error thrower call'
        - name: 
          ansible.builtin.include_role:
            name: common
            tasks_from: error_thrower.yml
          vars:
            fail_message: Server is not accessible
            error_name: server_unreachable
            message_details: "{{ test_connection.msg }}"
          when: test_connection.unreachable is defined 

Is there a way in Ansible to give two different credentials in the vault so it can have information to connect to both machines ?