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Published Jul. 2, 2025

Deprecation warning in the browser's console: "Value provided is not in a recognized RFC2822 or ISO format"

Written By

Alfonso Crisci

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Issue

  • After patching a bundle with a fix (Fix Pack or hotfix) that includes the solutions for LPS-121066 and LPS-121499, customers and DXP users may notice the below warning message in the browser's console:
    Deprecation warning: value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are discouraged and will be removed in an upcoming major release. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info.
    Arguments: 
    [0] _isAMomentObject: true, _isUTC: false, _useUTC: false, _l: undefined, _i: 09/14/2020, _f: undefined, _strict: undefined, _locale: [object Object]
    deprecate/<@http://localhost:8080/combo/?browserId=firefox&minifierType=&languageId=de_DE&b=7210&t=1601990324650&/o/js/resolved-module/dynamic-data-mapping-form-field-type@4.0.66/Paragraph/ParagraphRegister.soy.js&/o/js/resolved-module/dynamic-data-mapping-form-field-type@4.0.66/util/strings.es.js&/o/js/resolved-module/dynamic-data-mapping-form-field-type@4.0.66/Options/OptionsRegister.soy.js&/o/js/resolved-module/dynamic-data-mapping-form-field-type@4.0.66/Captcha/CaptchaRegis…

Environment

  • Liferay DXP 7.2

Resolution

  • This warning is safe to ignore. This is a deprecation warning that comes from moment.js and has no negative effect on the date picker.

Additional Information

  • For DXP 7.3, the datePicker has been reimplemented in React.js and this warning is no longer reproducible.
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