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Assuming that the variable field is an object with the content type ‘field_line(s)’, this is the equivalent of:
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recaptcha_scripts
If you are using reCaptcha for your forms, you need to add {% include "recaptcha_scripts" %} somewhere on the page that has the form on it. The form will not be submitted if the scripts are not included on the page! You will receive the following JS error: executeRecaptcha is not defined if it's not included.