Blank Preview page when content is processing or errors
[Provide a general summary of the issue in the title above]
Expected behaviour
There should be an indication that a preview will be available later once content is done processing / errors are fixed.
Current behaviour
A blank page appears
Steps to reproduce
Example: Another example: https://ncbi.cloud68.co/organizations/308db55a-21c9-4a64-9a70-d5aa7574726c/bookmanager/96a97d1d-3b7d-403f-9c2f-de3bd2fba297/1e418c5a-ea97-4b1e-b5c5-ea10923fc5f6
- Run source / converted file
- When file is processing look at preview page and see it is blank but should have notification
- Run file with error
- When file is processing look at preview page and see it is blank but should have notification
Environment
PC Chrome Version 92.0.4515.159 (Official Build) (64-bit)