SUMMARY
***
I wanted to supply a backtrace with my report of a Plasma crash in Ubuntu Studio.
What happened is I am unable to attach a backtrace with debug symbols. Receiving instead  "The generated crash information is not useful" 

Confused about whether Ubuntu Studio 22.04 had the DEBUGINFOD_URLS function I attempted to install the dbgsym-packages. 
Then found following error which might explain why I was receiving the above error message.

"E: The repository 'http://ddebs.ubuntu.com $(lsb_release Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.

 I am puzzled that after receiving the message 
"I: All needed dbgsym packages are already installed." 
the automatic report system has been disabled in this case.

I admit in attempting the following procedures I found myself confused at times. 
I have saved most of what command line work and results if that might clarify where I went wrong, if I did.
So any help in ensuring that I do have a working DEBUGINFOD_URLS function for the next crash whether Plasma or other applications, would help me to help you.
***
I encountered this error while attempting to report a Application: Plasma (plasmashell), signal: Segmentation fault
However in attempting to produce crash information I kept getting 
 "The generated crash information is not useful"
The KDE Crash Handler listed these as missing.
/usr/bin/plasmashell
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
/lib/x86_64-linux-gnu/libgio-2.0.so.0
/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
/lib/x86_64-linux-gnu/libQt5Core.so.5
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
/lib/x86_64-linux-gnu/libQt5Gui.so.5
/lib/x86_64-linux-gnu/libQt5DBus.so.5
/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
/lib/x86_64-linux-gnu/libGLX_mesa.so.0
/lib/x86_64-linux-gnu/libxcb.so.1
/lib/x86_64-linux-gnu/libkcupslib.so
/lib/x86_64-linux-gnu/libQt5Qml.so.5
/lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
/lib/x86_64-linux-gnu/libQt5Quick.so.5

Am I in error in assuming the above list is the same as those in,   "I: All needed dbgsym packages are already installed."

I tried and was unsuccessful in finding the [.so.5] versions listed in Synaptic Package Manager
I used "kstart5 plasmashell" to restart plasma and I followed the instructions in the sites listed in "Instructions followed" Below which should have installed the above missing packages.

Unsure if the Error "$(lsb_release Release' does not have a Release file." was the cause of an unusable trace file,  I ran ~$ find-dbgsym-packages [core_path|running_pid|binary_path]
. . .and received "I: All needed dbgsym packages are already installed."
I clicked [Reload] in the "Crash Reporting Assistant of the Kde Crash Handler"
and still received
 "The generated crash information is not useful"
and the same list of missing packages.

I backed up in the assistant to the first step and found the automated process UN-enabled and the following report
-----------------------------------------------------------------------
Application: plasmashell (5.24.7)

Qt Version: 5.15.3
Frameworks Version: 5.92.0
Operating System: Linux 5.15.0-60-lowlatency x86_64
Windowing System: X11
Distribution: Ubuntu 22.04.1 LTS
DrKonqi: 5.24.5 [KCrashBackend]

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

The reporter is unsure if this crash is reproducible.

-- Backtrace:
A useful backtrace could not be generated

Report to https://bugs.kde.org/
----------------------------------------------------------------------------------------
I am missing something, as these conflicting messages are confusing and me unsure what is causing which.
Any way I can help to clarify this, please ask.

Pages consulted and Instructions followed
 https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
https://wiki.ubuntu.com/Debug%20Symbol%20Packages
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Install_debugging_packages
https://ubuntu.com/server/docs/service-debuginfod [1]
https://manpages.ubuntu.com/manpages/trusty/man1/gdb.1.html

SOFTWARE/OS VERSIONS
Operating System: Ubuntu Studio 22.04
KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 5.15.0-60-lowlatency (64-bit)
Graphics Platform: X11
Processors: 24 × AMD Ryzen 9 7900X 12-Core Processor
Memory: 31.1 GiB of RAM
Graphics Processor: llvmpipe
ADDITIONAL INFORMATION

         [1] In https://ubuntu.com/server/docs/service-debuginfod I was advised, " If you use Bash, you can do that by adding the following snippet to your ~/.bashrc:
         export DEBUGINFOD_URLS="https://debuginfod.ubuntu.com"
 but neither Files or Dolphin can show any [.] files in [/] or a ".bashrc:" in Home where [.] files are shown. 
As this is a 22.04 version is such an addition even necessary I wonder?