[dolphin] [Bug 453103] New: Image Thumbnails Aren't Generated

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https://bugs.kde.org/show_bug.cgi?id=453103

            Bug ID: 453103
           Summary: Image Thumbnails Aren't Generated
           Product: dolphin
           Version: 22.04.0
          Platform: Kubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: view-engine: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: ElectronicsArchive at protonmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
After I upgraded to the newest LTS version of Ubuntu / Kubuntu (22.04),
( Wiped the system, new install )
Dolphin hasn't been showing image thumbnails anymore.

I checked the '~/.xsession-errors' and only found this non-descriptive error:
'org.kde.dolphin: Failed to generate hover sequence preview #1 for file
"<path>" (attempt <attempt>/3)'
( Many of times, for any images I hovered over )

STEPS TO REPRODUCE
1. Open a folder containing images 

OBSERVED RESULT
- PNG, WEBP, WEBM, JPG, GIF files have no thumbnails

EXPECTED RESULT
Image files have thumbnails

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 22.04  / 5.24.4
(available in About System)
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION

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