Follow-up - *Still not seeing images in viewer*, but the image metadata/etc 
now correctly shows up in the left bar of the viewer. The viewer now knows 
there are 9 images but the screen error says ' TypeError: NetworkError when 
attempting to fetch resource' .
 My earlier installation omitted an entry in 
/opt/dspace/config/modules/iiif.cfg, where I had "iiif.enabled = false". 
This somehow didn't seem to matter then but it does now. The current 
iiif.cfg file has the entry iiif.enabled = true.

As of this writing, the console messages are saying things, like:
ERROR Error: unsafe value used in a resource URL context (see 
https://g.co/ng/security#xss)
ERROR TypeError: this.vcr is undefined
Uncaught TypeError: Jc.viewer(...) is not a function
and
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the 
remote resource at 
http://localhost:8182/iiif/2/d884028d-4d4f-4b96-9568-59fb0533cef8/info.json. 
(Reason: CORS request did not succeed). Status code: (null).
(help?)

On Tuesday, April 5, 2022 at 6:56:38 PM UTC-4 Chris Clawson wrote:

> I am not sure what happened or where to investigate. I thought I had 
> correctly applied the 7.2.1 patch for the backend security update. 
> Everything seemed okay, except now I see that none of the 
> dspace.iiif.enabled items will display images in the Mirador viewer.
> The following item had been setup as a series of slides...
> https://meloware.org:8443/handle/123456789/6475 
> There were 9 images, each with an edited description in the individual 
> bitstreams metadata. Now the viewer says "1 of 0". 
>
> Before I begin to tear things apart, is there an issue here? First 
> suggestions?
>

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