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It crashes every time saying akonadi_control crashed 

I am using KDE neon 18.04

No LSB modules are available.
Distributor ID: neon
Description:    KDE neon User Edition 5.15
Release:        18.04
Codename:       bionic
Linux zalman 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
konsole 18.12.2
QMake version 3.1
Using Qt version 5.12.0 in /usr/lib/x86_64-linux-gnu



kmail --version
kmail2 5.10.2

the backtrace 


Application: akonadi_control (akonadi_control), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2260813800 (LWP 2733))]

Thread 2 (Thread 0x7f22537f4700 (LWP 2734)):
#0  0x00007f225e292bf9 in __GI___poll (fds=0x7f22537f3cb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f225a773747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f225a77536a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f22563b6d4a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f225ebb7bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f225df666db in start_thread (arg=0x7f22537f4700) at pthread_create.c:463
#6  0x00007f225e29f88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2260813800 (LWP 2733)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f225e1be801 in __GI_abort () at abort.c:79
#8  0x00007f225eb93e7b in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00005641fea8362f in akInit (appName=...) at ./src/shared/akdebug.cpp:206
#10 0x00005641fea81762 in AkApplicationBase::init (this=0x7fffd5079f20) at ./src/shared/akapplication.cpp:62
#11 0x00005641fea62138 in AkApplicationImpl<QGuiApplication>::AkApplicationImpl (loggingCategory=..., argv=0x7fffd507a088, argc=@0x7fffd5079e9c: 1, this=0x7fffd5079f20) at ./src/shared/akapplication.h:83
#12 main (argc=<optimized out>, argv=0x7fffd507a088) at ./src/akonadicontrol/main.cpp:55