Failed to generated using ...

[korymath]

When the system fails to generate a slide, it moves on to another generator.
That said, it does not generate an error message:

 * Generating slide 43 about bedroom using Goodreads Quote *
Failed to generated using: Goodreads Quote

 * Generating slide 43 about bedroom using Full Screen Giphy *

For this given error, it is unclear why the system failed, and how to fix it?

[korymath]

These are generator specific and should be debugged in each generator.
Timing, with parallelization, should help with this for blocking errors.

dfedf86