foundation.form.response.ui.error: foundation.sling
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``foundation.sling`` is a error response handler of :doc:`../../../index`.

A error handler to show an alert about the error using the message that is usually parsed from `Sling's HTMLResponse.class <https://sling.apache.org/apidocs/sling7/org/apache/sling/api/servlets/HtmlResponse.html>`_.
The message is taken from ``Messsage`` property of the parsed response data.


Matching Condition
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If the parsed response data is JS object having ``Status`` property.