Cannot select file with javascript when adding page ressources on API Developer Portal

Document ID : KB000098308
Last Modified Date : 29/05/2018
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Issue:
In the API Developer Portal 3.5 CR07 CMS , when you go to  Staging -> Pages -> Add page resources -> Add Item -> Select file you will get an empty popup. 
Where you should see the Javascript resources form and it should be possible to upload .js fils using "Import New Item" link.
Resolution:
This is a defect in CR07 of the API Developer Portal. There is currently no workaround. A fix will be released with CR08 of the Portal.