Ansible mount module update fstab that fails status check in EC2 Instance

Question

Here is my Ansible Task -

That mount a directory with an external ebs volume in EC2 instance to make an Amazon EBS volume available.

- name: Create Data directory #1 
  file:
    path: "{{ data_directory }}/"
    state: directory
  
- name: Get the EBS volume/block #2
  shell: lsblk -x SIZE | grep disk | tail -1 | awk '{print $1}'
  register: ebs_nvme_block
  check_mode: false

- name: Printout the block #3
  debug: 
    var: ebs_nvme_block.stdout_lines[0]

- name: Create a xfs filesystem on EBS volume #4
  filesystem:
    fstype: xfs
    dev: "/dev/{{ ebs_nvme_block.stdout_lines[0] }}"
  ignore_errors: "{{ ansible_check_mode }}"

- name: Get UUID of ebs volume #5
  shell: lsblk -o +UUID | grep "{{ ebs_nvme_block.stdout_lines[0] }}" |  awk '{print $NF}'
  register: uuid
  check_mode: false

- name: Print UUID #6
  debug:
    var: uuid.stdout

- name: Mount the ebs volume with /data directory #6
  mount:
    backup: yes
    path:  "{{ data_directory }}" 
    src: "/dev/{{ ebs_nvme_block.stdout_lines[0] }}" # or use UUID={{ uuid.stdout }}
    state: mounted
    opts: defaults,nofail
    dump: 0
    passno: 2
    fstype: xfs
  ignore_errors: "{{ ansible_check_mode }}"

Now this #6 code block mounts and creates a backup of /etc/fstab and updates as follows

LABEL=cloudimg-rootfs   /    ext4   defaults,discard    0 0
/dev/nvme1n1 /data xfs defaults,nofail 0 2

If I use UUID to mount then the /etc/fstab is modified as

LABEL=cloudimg-rootfs   /    ext4   defaults,discard    0 0
UUID=XXXXXXXXXXXXXXXX /data xfs defaults,nofail 0 0

#7 block code update the /etc/fstab as

LABEL=cloudimg-rootfs   /    ext4   defaults,discard    0 0
UUID={{ uuid.stdout }}  {{ data_directory }}  xfs  defaults,nofail  0  2

Everything works fine. I don't receive any error while mounting but whatever the reason the EC2 instance is getting Status check error [1/2 checks passed].

1. 1st question is - is there any format of /etc/fstab file. is there single space or double space in between values?
2. From here How fstab works and Make an Amazon EBS volume available for use on Linux, what I got is

• there are 2 spaces in between fields. When Ansible modifies the fstab file, it doesn't create any extra space.

UUID=aebf131c-6957-451e-8d34-ec978d9581ae /data xfs defaults,nofail 0 2

UUID=aebf131c-6957-451e-8d34-ec978d9581ae /data xfs defaults,nofail 0 2 [Ansible modifies]

• Does it have any effect in status check?

2. Ansible creates the backfile as fstab.DATETIME~ . Same question, does this backup file has any effect of status check error.