Warning: 'Undefined array key "separator"' when viewing revisions with Diff

@Hello Guys

To rectify this issue, we should check and make sure that the "separator" key exists in the $settings array before attempting to access its nested "day_hours" key. This can be done using the isset() or array_key_exists() functions to verify the existence of the "separator" key before accessing its nested keys.

Something like this
if (isset($settings['separator'])) {
$days_suffix = $settings['separator']['day_hours'];
} else{
}

Hmm, this is a regression issue. There is also another use case with the same problem.
I cannot find why/when this happened.

Anyway, I took another approach then you both. Please take a look at the committed, attached patch.

Automatically closed - issue fixed for 2 weeks with no activity.

Reroll against 8.x-1.12 release instead of dev