SUMMARY
Discover stop working after I tried auto update. I'm able to do updates by the command line "sudo apt-get update" then "sudo apt full-upgrade" but even after Discover still only opens for 5 maybe 10 sec. then closes with a "Please report this error to help improve this software."    so here I am and here is the "Developer Information"

Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa659722e00 (LWP 9511))]

Thread 10 (Thread 0x7fa5d77fe700 (LWP 9540)):
#0  0x00007fa6543530b4 in __GI___libc_read (fd=57, buf=0x7fa5d77fdba0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fa64e8532d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa64e80e0b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa64e80e570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa64e80e6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa64e80e721 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa64e836195 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fa6510ef6db in start_thread (arg=0x7fa5d77fe700) at pthread_create.c:463
#8  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fa5ee6ee700 (LWP 9531)):
#0  0x00007fa6510f59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5647ff3de520) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5647ff3de4d0, cond=0x5647ff3de4f8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5647ff3de4f8, mutex=0x5647ff3de4d0) at pthread_cond_wait.c:655
#3  0x00007fa654a6bdbb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa654a6c0c9 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa6581026f8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fa658102b2a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa6510ef6db in start_thread (arg=0x7fa5ee6ee700) at pthread_create.c:463
#9  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fa5eeeef700 (LWP 9530)):
#0  0x00007fa6543530b4 in __GI___libc_read (fd=47, buf=0x7fa5eeeeea50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fa64e8532d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa64e80e0b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa64e80e570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa64e80e6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa654c9adcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa654c3c03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa654a634ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa6510ef6db in start_thread (arg=0x7fa5eeeef700) at pthread_create.c:463
#10 0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fa61e674700 (LWP 9519)):
#0  0x00007fa64e854664 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa64e80d4b7 in g_main_context_acquire () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa64e80e485 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa64e80e6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa654c9adcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa654c3c03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa654a634ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa6510ef6db in start_thread (arg=0x7fa61e674700) at pthread_create.c:463
#9  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fa61fc6b700 (LWP 9518)):
#0  0x00007fa64e8532c3 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa64e80e0b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa64e80e570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa64e80e6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa654c9adcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa654c3c03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa654a634ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa6510ef6db in start_thread (arg=0x7fa61fc6b700) at pthread_create.c:463
#9  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fa62bcee700 (LWP 9516)):
#0  0x00007fa6510f59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5647fce8f178) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5647fce8f128, cond=0x5647fce8f150) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5647fce8f150, mutex=0x5647fce8f128) at pthread_cond_wait.c:655
#3  0x00007fa62d1130aa in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fa62d112dd7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fa6510ef6db in start_thread (arg=0x7fa62bcee700) at pthread_create.c:463
#6  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fa63b5ef700 (LWP 9515)):
#0  0x00007fa6543530b4 in __GI___libc_read (fd=9, buf=0x7fa63b5eea30, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fa64e8532d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa64e80e0b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa64e80e570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa64e80e6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa654c9adcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa654c3c03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa654a634ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa655a4e115 in QQmlThreadPrivate::run (this=0x5647fce06d50) at qml/ftw/qqmlthread.cpp:148
#9  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa6510ef6db in start_thread (arg=0x7fa63b5ef700) at pthread_create.c:463
#11 0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fa64086c700 (LWP 9514)):
#0  0x00007fa654357bf9 in __GI___poll (fds=0x7fa634018040, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa64e80e5c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa64e80e6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa654c9adcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa654c3c03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa654a634ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa655dec015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa6510ef6db in start_thread (arg=0x7fa64086c700) at pthread_create.c:463
#9  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fa644544700 (LWP 9513)):
#0  0x00007fa654357bf9 in __GI___poll (fds=0x7fa644543b68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa64df43747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa64df4536a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa647124578 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fa654a64c72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa6510ef6db in start_thread (arg=0x7fa644544700) at pthread_create.c:463
#6  0x00007fa65436488f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fa659722e00 (LWP 9511)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007fa655879215 in QV4::Object::get (receiver=0x7fff98856e98, hasProperty=0x0, name=0x7fff98856ea0, this=0x7fff98856e98) at jsruntime/qv4object_p.h:308
#8  QV4::Lookup::getterProtoTwoClasses (l=<optimized out>, engine=<optimized out>, object=...) at jsruntime/qv4lookup.cpp:301
#9  0x00007fa62a8b58ce in ?? ()
#10 0x0000000000000000 in ?? ()


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION