[dolphin] [Bug 430901] New: Dolphin freezes after right clicking on a file

[Podagric]

https://bugs.kde.org/show_bug.cgi?id=430901

            Bug ID: 430901
           Summary: Dolphin freezes after right clicking on a file
           Product: dolphin
           Version: 20.12.0
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: kde.podagric at slmail.me
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
In a recent update of plasma and/or frameworks (I don?t remember exactly) all
system files started to have VLC as a compatible program to read it, even those
that didn?t make any sense, like SQL and APK files. 
I ignored this for a while but today I decided to uninstall and reinstall VLC
to try to solve this problem. After that, dolphin started presenting these
freezes when I click on any file with the right button.


STEPS TO REPRODUCE
I think this is going to be very hard to reproduce, but here goes
1. Open the dolphin and right-click on any file
2. Now the program is frozen for several seconds

Log
```
$  dolphin
kf.kio.core: We got some errors while running testparm "Weak crypto is allowed"
Cannot initialize model with data QJsonObject() . missing: QJsonValue(string,
"urls")
org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mng"
org.kde.kdegraphics.gwenview.lib: Unresolved raw mime type  "image/x-nikon-nrw"
org.kde.kdegraphics.gwenview.lib: Unresolved raw mime type 
"image/x-samsung-srw"
Cannot initialize model with data QJsonObject() . missing: QJsonValue(string,
"urls")
```

ADDITIONAL INFORMATION
I recorded a small video showing the bug. It will be attached to this report

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Kernel Version: 5.9.14-arch1-1
OS Type: 64-bit

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