SP.UpgradeInfo.errorFile property (sp.js)
The location of the file that contains upgrade errors.
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value =SP.UpgradeInfo.get_errorFile()
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The location of the file that contains upgrade errors.
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value =SP.UpgradeInfo.get_errorFile()