How do you export .kbdx file from keeweb?

Right now my keyfile is stored inside the app, I’d like to save it to my computer. If I go to the settings under “Save to” and choose “File”, nothing happens and I get the following error in the console :

 Content Security Policy: The page’s settings blocked the loading of a resource at blob:https://cloud.xxxxxxx.com/53517a84-732e-4fab-8c18-ca5fd325ac07 (“frame-src https://cloud.xxxxxxxxxx.com”)