Could not parse the date '1964/2008'

[Natkeeran]

We have an EDTF field. Inputting range date such as 1964/2008 throws the following error: Could not parse the date '1964/2008'

Seems like this is where the checking happens: https://github.com/Islandora/controlled_access_terms/blob/2.x/src/EDTFUtils.php#L193

Additional Notes

• "islandora/controlled_access_terms": "2.x-dev",
• "professional-wiki/edtf": "^2.0"

<?php
$date = "1964/2008";
$pattern = '/^([%\?~])?(Y?(-?[\dX]+)(E\d)?(S\d)?)([%\?~])?-?([%\?~])?([\dX]{2})?([%\?~])?-?([%\?~])?([\dX]{2})?([%\?~])?$/';
preg_match($pattern, $date, $parsed_date);
print_r($parsed_date);
?>

It does work in the sandbox!

[seth-shaw-unlv]

Can you check your widget settings. Ensure that "Permit date intervals." is checked: