https://bugs.kde.org/show_bug.cgi?id=423148
--- Comment #3 from catandras48+...@gmail.com --- Hello! Thank you for your support. I followed the instructions on https://wiki.ubuntu.com/Debug%20Symbol%20Packages but it didn't change the backtrace. So I followed the Link "How to create useful crash reports" in The KDE Crash Handler https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Ubuntu-based_distros_.28Ubuntu.2C_Kubuntu.2C_KDE_Neon.2C_Linux_Mint.29 and klicked on the Debugging Program Crashes page https://wiki.kubuntu.org/DebuggingProgramCrash I installed apport-retrace and followed the man-page http://manpages.ubuntu.com/manpages/focal/en/man1/apport-retrace.1.html $ apport-retrace --gdb --sandbox system --cache ~/.cache/apport-retrace /var/crash/_usr_bin_okular.1000.crash ERROR: report file does not contain one of the required fields: Package That doesn't work either. https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_with_GDB Using $ gdb okular (gdb) run didn't cause a crash, as expected. Because if I start Okular manually and File -> Open... a PDF, it work's. It just crashes opening any PDF out of Dolphin. You can download the 32,2 MiB file /var/crash/_usr_bin_okular.1000.crash from here: https://drive.google.com/file/d/1FpJBgdAItH17iqXpPyVpoHkgJW1V22Re/view?usp=sharing -- You are receiving this mail because: You are watching all bug changes.