#0  0x00007f2a0efaa28c in WTFCrash () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#1  0x00007f2a0ff15cca in  () at /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#2  0x00007f2a0ff0a82c in  () at /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#3  0x00007f2a100e2463 in webkit_web_view_run_javascript () at /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#4  0x00007f2a1e390e18 in ffi_call_unix64 () at /usr/lib/x86_64-linux-gnu/libffi.so.6
#5  0x00007f2a1e39087a in ffi_call () at /usr/lib/x86_64-linux-gnu/libffi.so.6
#6  0x00007f2a1b720de4 in  () at /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so
#7  0x00007f2a1b722998 in  () at /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so
#8  0x00007f2a1b716c39 in  () at /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so
#9  0x00000000004591b3 in _PyObject_FastCallDict ()
#10 0x000000000054e607 in  ()
#11 0x0000000000552f9b in _PyEval_EvalFrameDefault ()
#12 0x000000000054e4b1 in  ()
#13 0x000000000054e73d in  ()
#14 0x0000000000552f9b in _PyEval_EvalFrameDefault ()
#15 0x000000000054e4b1 in  ()
#16 0x000000000054e73d in  ()
#17 0x0000000000552f9b in _PyEval_EvalFrameDefault ()
#18 0x000000000054da88 in  ()
#19 0x000000000054e9e6 in  ()
#20 0x0000000000552f9b in _PyEval_EvalFrameDefault ()
#21 0x000000000054e4b1 in  ()
#22 0x000000000054f45f in PyEval_EvalCodeEx ()
#23 0x000000000048b41d in  ()
#24 0x0000000000458fbe in PyObject_Call ()
#25 0x0000000000551497 in _PyEval_EvalFrameDefault ()
#26 0x000000000054da88 in  ()
#27 0x000000000054e9e6 in  ()
#28 0x0000000000552f9b in _PyEval_EvalFrameDefault ()
#29 0x000000000054da88 in  ()
#30 0x000000000054e9e6 in  ()
#31 0x0000000000552f9b in _PyEval_EvalFrameDefault ()
#32 0x000000000054da88 in  ()
#33 0x000000000055772e in _PyFunction_FastCallDict ()
#34 0x0000000000459531 in _PyObject_Call_Prepend ()
#35 0x0000000000458fbe in PyObject_Call ()
#36 0x000000000058db52 in  ()
#37 0x00007f2a2282574a in start_thread (arg=0x7f298bfff700) at pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f298bfff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139816419194624, -5678151494117850893, 139816788271502, 139816788271503, 139816419195328, 139816419194624, 5719625072159785203, 5721649914893205747}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#38 0x00007f2a21a09caf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97