[qutebrowser] Crash when Initializing websettings...

[Lennard Henze]

Hello Ladies and Gentleman,


i run qutebrowser on Ubuntu 16.04 LTS (Kernel: 4.4.0-116-generic).

Because it did not work anymore i deleted the git repro and just pulled 
a new one.
$ tox -e mkvenv-pypi
succeded. But now when i run qutebrowser it does not work, i did run it 
with -l vdebug and got this result:

....
....

11:12:14 DEBUG    init       app:_init_modules:462 Initializing crashlog...
11:12:14 DEBUG    init       app:_init_modules:466 Initializing sessions...
11:12:14 DEBUG    init       app:_init_modules:469 Initializing 
websettings...
Could not find QtWebEngineProcess
[6935:6935:0307/111214.807435:FATAL:zygote_host_impl_linux.cc(182)] 
Check failed: ReceiveFixedMessage(fds[0], kZygoteBootMessage, 
sizeof(kZygoteBootMessage), &boot_pid).
#0 0x7fc8f48570a5 <unknown>
#1 0x7fc8f486ceca <unknown>
#2 0x7fc8f3eaffc3 <unknown>
#3 0x7fc8f3eaec3b <unknown>
#4 0x7fc8f3eaf219 <unknown>
#5 0x7fc8f3af293a <unknown>
#6 0x7fc8f3af7e76 <unknown>
#7 0x7fc8f3615600 <unknown>
#8 0x7fc8f3616b25 <unknown>
#9 0x7fc8f35aaa61 QtWebEngineCore::BrowserContextAdapter::defaultContext()
#10 0x7fc8f9560218 QWebEngineProfile::defaultProfile()
#11 0x7fc8f9790445 meth_QWebEngineProfile_defaultProfile
#12 0x0000004e9b7f PyCFunction_Call
#13 0x0000005372f4 PyEval_EvalFrameEx
#14 0x00000053b7e4 PyEval_EvalFrameEx
#15 0x00000053b7e4 PyEval_EvalFrameEx
#16 0x00000053b7e4 PyEval_EvalFrameEx
#17 0x00000053b7e4 PyEval_EvalFrameEx
#18 0x00000053b7e4 PyEval_EvalFrameEx
#19 0x00000053b7e4 PyEval_EvalFrameEx
#20 0x00000053b7e4 PyEval_EvalFrameEx
#21 0x000000540199 <unknown>
#22 0x000000540e4f PyEval_EvalCode
#23 0x00000054a7c5 <unknown>
#24 0x0000004e9b7f PyCFunction_Call
#25 0x0000005372f4 PyEval_EvalFrameEx
#26 0x000000540199 <unknown>
#27 0x00000053bd92 PyEval_EvalFrameEx
#28 0x000000540f9b PyEval_EvalCodeEx
#29 0x0000004ebd98 <unknown>
#30 0x0000005c1797 PyObject_Call
#31 0x00000063f4bd <unknown>
#32 0x00000063fd76 Py_Main
#33 0x0000004cfeb1 main
#34 0x7fc906ae6830 __libc_start_main
#35 0x0000005d6049 _start

Received signal 6
#0 0x7fc8f48570a5 <unknown>
#1 0x7fc8f3598141 <unknown>
#2 0x7fc8f485743d <unknown>
#3 0x7fc906ea1390 <unknown>
#4 0x7fc906afb428 gsignal
#5 0x7fc906afd02a abort
#6 0x7fc8f4856dc5 <unknown>
#7 0x7fc8f486d1ed <unknown>
#8 0x7fc8f3eaffc3 <unknown>
#9 0x7fc8f3eaec3b <unknown>
#10 0x7fc8f3eaf219 <unknown>
#11 0x7fc8f3af293a <unknown>
#12 0x7fc8f3af7e76 <unknown>
#13 0x7fc8f3615600 <unknown>
#14 0x7fc8f3616b25 <unknown>
#15 0x7fc8f35aaa61 QtWebEngineCore::BrowserContextAdapter::defaultContext()
#16 0x7fc8f9560218 QWebEngineProfile::defaultProfile()
#17 0x7fc8f9790445 meth_QWebEngineProfile_defaultProfile
#18 0x0000004e9b7f PyCFunction_Call
#19 0x0000005372f4 PyEval_EvalFrameEx
#20 0x00000053b7e4 PyEval_EvalFrameEx
#21 0x00000053b7e4 PyEval_EvalFrameEx
#22 0x00000053b7e4 PyEval_EvalFrameEx
#23 0x00000053b7e4 PyEval_EvalFrameEx
#24 0x00000053b7e4 PyEval_EvalFrameEx
#25 0x00000053b7e4 PyEval_EvalFrameEx
#26 0x00000053b7e4 PyEval_EvalFrameEx
#27 0x000000540199 <unknown>
#28 0x000000540e4f PyEval_EvalCode
#29 0x00000054a7c5 <unknown>
#30 0x0000004e9b7f PyCFunction_Call
#31 0x0000005372f4 PyEval_EvalFrameEx
#32 0x000000540199 <unknown>
#33 0x00000053bd92 PyEval_EvalFrameEx
#34 0x000000540f9b PyEval_EvalCodeEx
#35 0x0000004ebd98 <unknown>
#36 0x0000005c1797 PyObject_Call
#37 0x00000063f4bd <unknown>
#38 0x00000063fd76 Py_Main
#39 0x0000004cfeb1 main
#40 0x7fc906ae6830 __libc_start_main
#41 0x0000005d6049 _start
   r8: 00007ffc4a224dd0  r9: 00007fc9072a7700 r10: 0000000000000008 r11: 
0000000000000206
  r12: 00007ffc4a224ba0 r13: 00000000000000aa r14: 00007ffc4a224dd0 r15: 
00007ffc4a225540
   di: 0000000000001b17  si: 0000000000001b17  bp: 00007fc90488d140 bx: 
00007ffc4a225320
   dx: 0000000000000006  ax: 0000000000000000  cx: 00007fc906afb428 sp: 
00007ffc4a224a38
   ip: 00007fc906afb428 efl: 0000000000000206 cgf: 0000000000000033 erf: 
0000000000000000
  trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000
[end of stack trace]
Calling _exit(1). Core file will not be generated.


Any advise what i can do to fix it is highly appreciated!

Lennard