Select fields has error on Checkout form

[miguelrock22]

When it's configured fields as select, Magento doesn't display it, and in the console we get the following error:

Uncaught ReferenceError: Unable to process binding “optgroup: function(){return options }”

The field is displayed but it doesn't have any option in there

Notes:
Check this link for and code snippet to solve the problem

https://magento.stackexchange.com/questions/280897/in-magento-2-uncaught-referenceerror-unable-to-process-binding-optgroup-funct

Thanks!

[miguelrock22]

Also, yo have to pass the options array defined in the source model, or wherever you definde the options for the select list, you can check https://devdocs.magento.com/guides/v2.4/ui_comp_guide/components/ui-select.html