Kontact is crashing in QtWebEngine

#1  0x00007ff0688d54fe in KCrash::defaultCrashHandler(int) ()
    at /lib64/libKF5Crash.so.5
#2  0x00007ff0635157e0 in <signal handler called> () at /usr/lib64/libc-2.23.so
#3  0x00007ff05e964b3e in QtWebEngineCore::NetworkDelegateQt::OnBeforeURLRequest(net::URLRequest*, base::Callback<void (int)> const&, GURL*) (this=0x7ff000003a50, request=<optimized out>, callback=..., newUrl=0x7ff00069b140)
    at /usr/src/debug/qtwebengine-opensource-src-5.6.2/src/core/network_delegate_qt.cpp:111
        requestInfo = {d_ptr = {d = 0x7ff000608710}}
        resourceInfo = 0x7ff000560920
        resourceType = content::RESOURCE_TYPE_STYLESHEET
        navigationType = 0
        qUrl = {d = 0x7ff00041cf60}
        interceptor = 0x55c3ceecdd50
        renderProcessId = -277647872
        renderFrameId = 1305607009
        params = 
          {url = {d = 0x7ff00041cfc0}, isMainFrameRequest = 2, navigationType = 32752, renderProcessId = 3, renderFrameId = 0}
        __FUNCTION__ = "OnBeforeURLRequest"
#4  0x00007ff05f258210 in net::NetworkDelegate::NotifyBeforeURLRequest(net::URLRequest*, base::Callback<void (int)> const&, GURL*) (this=0x7ff000003a50, request=request@entry=0x7ff00069b030, callback=..., new_url=new_url@entry=0x7ff00069b140)
    at /usr/src/debug/qtwebengine-opensource-src-5.6.2/src/3rdparty/chromium/net/base/network_delegate.cc:26
        tracking_profile = 
              {scoped_profile_ = {birth_ = 0x0, stopwatch_ = {start_time_ = {ms_ = 0}, wallclock_duration_ms_ = 0, current_thread_data_ = 0x0, excluded_duration_ms_ = 0, parent_ = 0x0}}}
#5  0x00007ff05f21c800 in net::URLRequest::Start() (this=0x7ff00069b030)
    at /usr/src/debug/qtwebengine-opensource-src-5.6.2/src/3rdparty/chromium/net/url_request/url_request.cc:514
        tracking_profile25 = 
              {scoped_profile_ = {birth_ = 0x0, stopwatch_ = {start_time_ = {ms_ = 0}, wallclock_duration_ms_ = 0, current_thread_data_ = 0x0, excluded_duration_ms_ = 0, parent_ = 0x0}}}
        error = <optimized out>
---Type <return> to continue, or q <return> to quit---
        tracking_profile = 
              {scoped_profile_ = {birth_ = 0x0, stopwatch_ = {start_time_ = {ms_ = 0}, wallclock_duration_ms_ = 0, current_thread_data_ = 0x0, excluded_duration_ms_ = 0, parent_ = 0x0}}}
        tracking_profile2 = 
              {scoped_profile_ = {birth_ = 0x0, stopwatch_ = {start_time_ = {ms_ = 0}, wallclock_duration_ms_ = 0, current_thread_data_ = 0x0, excluded_duration_ms_ = 0, parent_ = 0x0}}}
#6  0x00007ff05f447da0 in content::ResourceLoader::StartRequestInternal() (this=0x7ff0003b9900)
    at /usr/src/debug/qtwebengine-opensource-src-5.6.2/src/3rdparty/chromium/content/browser/loader/resource_loader.cc:498