Crash traceback

masiao@fermat:~/sage_newpari$ ./sage
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.4.beta1, Release Date: 2021-06-06               │
│ Using Python 3.8.5. Type "help()" for help.                        │
└────────────────────────────────────────────────────────────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Warning: this is a prerelease version, and it may be unstable.     ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
sage: K.<a> = NumberField(x^2 + x + 1)
....: list(K.ideal(8).invertible_residues())
munmap_chunk(): invalid pointer
------------------------------------------------------------------------
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cysignals/signals.cpython-38-x86_64-linux-gnu.so(+0x7e94)[0x7f5ab3743e94]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cysignals/signals.cpython-38-x86_64-linux-gnu.so(+0x8079)[0x7f5ab3744079]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cysignals/signals.cpython-38-x86_64-linux-gnu.so(+0xa995)[0x7f5ab3746995]
/lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7f5ab626f210]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f5ab626f18b]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b)[0x7f5ab624e859]
/lib/x86_64-linux-gnu/libc.so.6(+0x903ee)[0x7f5ab62b93ee]
/lib/x86_64-linux-gnu/libc.so.6(+0x9847c)[0x7f5ab62c147c]
/lib/x86_64-linux-gnu/libc.so.6(+0x986cc)[0x7f5ab62c16cc]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/ext/memory.cpython-38-x86_64-linux-gnu.so(+0x3bf5)[0x7f5ab14eabf5]
/usr/local/lib/libgmp.so.23(__gmpq_div+0x14b)[0x7f5ab24cd10b]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/rings/rational.cpython-38-x86_64-linux-gnu.so(+0x5c8c2)[0x7f5ab02c68c2]
python3[0x50e697]
python3(PyNumber_TrueDivide+0x19)[0x50ea99]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/rings/number_field/number_field_element_quadratic.cpython-38-x86_64-linux-gnu.so(+0x1a463)[0x7f52b4499463]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/rings/number_field/number_field_element.cpython-38-x86_64-linux-gnu.so(+0x84766)[0x7f52b4553766]
python3(PyCFunction_Call+0x59)[0x5f5b29]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/rings/number_field/number_field_element.cpython-38-x86_64-linux-gnu.so(+0x1a86a)[0x7f52b44e986a]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/rings/number_field/number_field_element.cpython-38-x86_64-linux-gnu.so(+0x35dcb)[0x7f52b4504dcb]
python3(PyCFunction_Call+0x59)[0x5f5b29]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cypari2/gen.cpython-38-x86_64-linux-gnu.so(+0xb8066)[0x7f5aa97a3066]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cypari2/gen.cpython-38-x86_64-linux-gnu.so(+0xef8d3)[0x7f5aa97da8d3]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cypari2/gen.cpython-38-x86_64-linux-gnu.so(+0x154cce)[0x7f5aa983fcce]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/cypari2/gen.cpython-38-x86_64-linux-gnu.so(+0x154fba)[0x7f5aa983ffba]
/home/masiao/sage_newpari/local/lib/python3.8/site-packages/sage/structure/element.cpython-38-x86_64-linux-gnu.so(+0x12508)[0x7f5ab3b1c508]
python3(_PyObject_MakeTpCall+0x296)[0x5f66f6]
python3[0x50ad17]
python3(_PyEval_EvalFrameDefault+0x5796)[0x570296]
python3[0x50a4ce]
python3(_PyEval_EvalFrameDefault+0x5796)[0x570296]
python3(_PyEval_EvalCodeWithName+0x26a)[0x56951a]
python3(_PyFunction_Vectorcall+0x393)[0x5f60b3]
python3(_PyEval_EvalFrameDefault+0x71e)[0x56b21e]
python3[0x500934]
python3[0x5ef48c]
python3(_PyObject_MakeTpCall+0x1ff)[0x5f665f]
python3(_PyEval_EvalFrameDefault+0x59c3)[0x5704c3]
python3(_PyEval_EvalCodeWithName+0x26a)[0x56951a]
python3(PyEval_EvalCode+0x27)[0x68be87]
python3[0x5ffde4]
python3[0x5c49a0]
python3(_PyEval_EvalFrameDefault+0x71e)[0x56b21e]
python3[0x500528]
python3(_PyEval_EvalFrameDefault+0x214a)[0x56cc4a]
python3[0x500528]
python3(_PyEval_EvalFrameDefault+0x214a)[0x56cc4a]
python3[0x500528]
python3[0x504186]
python3(_PyEval_EvalFrameDefault+0x8fe)[0x56b3fe]
python3(_PyFunction_Vectorcall+0x1b6)[0x5f5ed6]
python3(_PyEval_EvalFrameDefault+0x71e)[0x56b21e]
python3(_PyFunction_Vectorcall+0x1b6)[0x5f5ed6]
python3(_PyEval_EvalFrameDefault+0x8fe)[0x56b3fe]
python3(_PyEval_EvalCodeWithName+0x26a)[0x56951a]
python3[0x50a640]
python3(_PyEval_EvalFrameDefault+0x18f8)[0x56c3f8]
python3(_PyEval_EvalCodeWithName+0x26a)[0x56951a]
python3(_PyFunction_Vectorcall+0x393)[0x5f60b3]
python3(_PyEval_EvalFrameDefault+0x8fe)[0x56b3fe]
python3(_PyEval_EvalCodeWithName+0x26a)[0x56951a]
python3(_PyFunction_Vectorcall+0x393)[0x5f60b3]
python3(_PyEval_EvalFrameDefault+0x8fe)[0x56b3fe]
python3(_PyFunction_Vectorcall+0x1b6)[0x5f5ed6]
python3(_PyEval_EvalFrameDefault+0x8fe)[0x56b3fe]
python3(_PyEval_EvalCodeWithName+0x26a)[0x56951a]
python3(PyEval_EvalCode+0x27)[0x68be87]
python3[0x67b671]
python3[0x67b6ef]
python3(PyRun_FileExFlags+0x9b)[0x67b7ab]
python3(PyRun_SimpleFileExFlags+0x17e)[0x67d82e]
python3(Py_RunMain+0x212)[0x6b5682]
python3(Py_BytesMain+0x2d)[0x6b5a0d]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f5ab62500b3]
python3(_start+0x2e)[0x5f9ece]
------------------------------------------------------------------------
Attaching gdb to process id 1126795.
GNU gdb (Ubuntu 9.2-0ubuntu1~20.04) 9.2
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
[New LWP 1126857]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f5ab630edff in wait4 () from /lib/x86_64-linux-gnu/libc.so.6

Stack backtrace
---------------
No symbol table info available.
#1  0x00007f5ab3743f74 in print_enhanced_backtrace ()
    at build/src/cysignals/implementation.c:579
        parent_pid = 1126795
        pid = <optimized out>
#2  0x00007f5ab37440b6 in sigdie (sig=sig@entry=6,
    s=s@entry=0x7f5ab374ead8 "Unhandled SIGABRT: An abort() occurred.")
    at build/src/cysignals/implementation.c:605
No locals.
#3  0x00007f5ab3746995 in sigdie_for_sig (inside=0, sig=6)
    at build/src/cysignals/implementation.c:175
No locals.
#4  cysigs_signal_handler (sig=6) at build/src/cysignals/implementation.c:278
        inside = <optimized out>
#5  <signal handler called>
No symbol table info available.
#6  0x00007f5ab626f18b in raise () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x00007f5ab624e859 in abort () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#8  0x00007f5ab62b93ee in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#9  0x00007f5ab62c147c in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#10 0x00007f5ab62c16cc in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#11 0x00007f5ab14eabf5 in sig_free (__pyx_v_ptr=<optimized out>)
    at build/cythonized/sage/ext/memory.c:1923
No locals.
#12 __pyx_f_4sage_3ext_6memory_sage_sig_free (__pyx_v_ptr=<optimized out>,
    __pyx_v_size=<optimized out>) at build/cythonized/sage/ext/memory.c:1501
No locals.
#13 0x00007f5ab24cd10b in __gmpq_div () from /usr/local/lib/libgmp.so.23
No symbol table info available.
#14 0x00007f5ab02c68c2 in __pyx_pf_4sage_5rings_8rational_8Rational_98__truediv__ (__pyx_v_right=0x7f52a9075c20, __pyx_v_left=0x7f52a8db3f40)
    at build/cythonized/sage/rings/rational.cpp:21316
        __pyx_t_3 = 1
        __pyx_clineno = 0
        __pyx_r = 0x0
        __pyx_t_1 = 0x0
        __pyx_t_4 = <optimized out>
        __pyx_filename = 0x0
        __pyx_v_x = 0x7f52a82ec8b0
        __pyx_t_2 = 0x0
        __pyx_lineno = 0
        __pyx_v_x = <optimized out>
        __pyx_r = <optimized out>
        __pyx_t_1 = <optimized out>
        __pyx_t_2 = <optimized out>
        __pyx_t_3 = <optimized out>
        __pyx_t_4 = <optimized out>
        __pyx_lineno = <optimized out>
        __pyx_filename = <optimized out>
        __pyx_clineno = <optimized out>
        __pyx_dict_version = 0
        __pyx_dict_cached_value = 0x0
#15 __pyx_pw_4sage_5rings_8rational_8Rational_99__truediv__ (
    __pyx_v_left=0x7f52a8db3f40, __pyx_v_right=0x7f52a9075c20)
    at build/cythonized/sage/rings/rational.cpp:21225
        __pyx_r = 0x0
#16 0x000000000050e697 in ?? ()
No symbol table info available.
#17 0x000000000050ea99 in PyNumber_TrueDivide ()
No symbol table info available.
#18 0x00007f52b4499463 in __pyx_f_4sage_5rings_12number_field_30number_field_element_quadratic_28NumberFieldElement_quadratic__coefficients (
    __pyx_v_self=<optimized out>, __pyx_skip_dispatch=<optimized out>)
    at build/cythonized/sage/rings/number_field/number_field_element_quadratic.cpp:17048
        __pyx_v_gen = 0x7f52a9a8a930
        __pyx_v_const = 0x7f52a93cfbd0
        __pyx_v_lin = 0x7f52a9021e00
        __pyx_v_ad = 0x7f52a94562c0
        __pyx_v_bd = 0x7f52a8db3f40
        __pyx_v_alpha = 0x7f52a971d450
        __pyx_v_beta = 0x7f52a9075c20
        __pyx_v_scale = 0x0
        __pyx_r = 0x0
        __pyx_t_1 = <optimized out>
        __pyx_t_2 = 0x0
        __pyx_t_3 = 0x0
        __pyx_t_4 = 0x0
        __pyx_t_5 = <optimized out>
        __pyx_t_6 = <optimized out>
        __pyx_t_7 = <optimized out>
        __pyx_lineno = 0
        __pyx_filename = 0x0
        __pyx_clineno = 0
#19 0x00007f52b4553766 in __pyx_pf_4sage_5rings_12number_field_20number_field_element_18NumberFieldElement_18_pari_polynomial (__pyx_v_name=<optimized out>,
    __pyx_v_self=0x7f52a82f6a90)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:10438
        __pyx_t_3 = 0x7f5ab008c8c0
        __pyx_t_6 = <optimized out>
        __pyx_clineno = 0
        __pyx_r = 0x0
        __pyx_t_1 = 0x0
        __pyx_t_4 = 0x0
        __pyx_filename = 0x0
        __pyx_v_f = 0x0
        __pyx_v_alpha = 0x0
        __pyx_t_2 = 0x0
        __pyx_t_5 = 0x0
        __pyx_lineno = 0
        __pyx_v_f = <optimized out>
        __pyx_v_alpha = <optimized out>
        __pyx_r = <optimized out>
        __pyx_t_1 = <optimized out>
        __pyx_t_2 = <optimized out>
        __pyx_t_3 = <optimized out>
        __pyx_t_4 = <optimized out>
        __pyx_t_5 = <optimized out>
        __pyx_t_6 = <optimized out>
        __pyx_lineno = <optimized out>
        __pyx_filename = <optimized out>
        __pyx_clineno = <optimized out>
        __pyx_dict_version = 537271
        __pyx_dict_cached_value = 0x7f5ab008c8c0
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
#20 __pyx_pw_4sage_5rings_12number_field_20number_field_element_18NumberFieldElement_19_pari_polynomial (__pyx_v_self=0x7f52a82f6a90,
    __pyx_args=<optimized out>, __pyx_kwds=<optimized out>)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:10406
        __pyx_v_name = <optimized out>
        __pyx_lineno = 0
        __pyx_filename = 0x0
        __pyx_clineno = 0
#21 0x00000000005f5b29 in PyCFunction_Call ()
No symbol table info available.
#22 0x00007f52b44e986a in __Pyx_PyObject_Call (kw=0x0, arg=0x7f52a8d02850,
    func=0x7f52a8de6630)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:51356
        result = <optimized out>
        call = 0x5f5ad0 <PyCFunction_Call>
        result = <optimized out>
        call = <optimized out>
#23 __Pyx__PyObject_CallOneArg (func=func@entry=0x7f52a8de6630,
    arg=arg@entry=0x7f5ab5aeafb0)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:51638
        result = <optimized out>
        args = 0x7f52a8d02850
#24 0x00007f52b4504dcb in __Pyx_PyObject_CallOneArg (arg=<optimized out>,
    func=0x7f52a8de6630)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:51657
No locals.
#25 __pyx_pf_4sage_5rings_12number_field_20number_field_element_18NumberFieldElement_20__pari__ (__pyx_v_name=<optimized out>, __pyx_v_self=0x7f52a82f6a90)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:10747
        __pyx_v_g = 0x0
        __pyx_t_3 = <optimized out>
        __pyx_clineno = 0
        __pyx_r = 0x0
        __pyx_t_1 = 0x0
        __pyx_filename = 0x0
        __pyx_v_f = 0x0
        __pyx_t_2 = <optimized out>
        __pyx_lineno = 0
        __pyx_v_f = <optimized out>
        __pyx_v_g = <optimized out>
        __pyx_r = <optimized out>
        __pyx_t_1 = <optimized out>
        __pyx_t_2 = <optimized out>
        __pyx_t_3 = <optimized out>
        __pyx_lineno = <optimized out>
        __pyx_filename = <optimized out>
        __pyx_clineno = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
        function = <optimized out>
        tmp = <optimized out>
#26 __pyx_pw_4sage_5rings_12number_field_20number_field_element_18NumberFieldElement_21__pari__ (__pyx_v_self=0x7f52a82f6a90, __pyx_args=<optimized out>,
    __pyx_kwds=<optimized out>)
    at build/cythonized/sage/rings/number_field/number_field_element.cpp:10708
        __pyx_v_name = <optimized out>
        __pyx_lineno = 0
        __pyx_filename = 0x0
        __pyx_clineno = 0
#27 0x00000000005f5b29 in PyCFunction_Call ()
No symbol table info available.
#28 0x00007f5aa97a3066 in __Pyx_PyObject_Call (func=0x7f52a83c24f0,
    arg=0x7f5ab5d36040, kw=0x0) at cypari2/gen.c:221208
        result = <optimized out>
        call = 0x5f5ad0 <PyCFunction_Call>
#29 0x00007f5aa97da8d3 in __pyx_f_7cypari2_3gen_objtogen (
    __pyx_v_s=__pyx_v_s@entry=0x7f52a82f6a90,
    __pyx_skip_dispatch=<optimized out>) at cypari2/gen.c:186871
        __pyx_tstate = 0xb48310
        __pyx_v_m = 0x7f52a83c24f0
        __pyx_v_g = <optimized out>
        __pyx_v_res = 0x0
        __pyx_v_L = 0x0
        __pyx_v_x = 0x0
        __pyx_r = 0x0
        __pyx_t_1 = <optimized out>
        __pyx_t_2 = <optimized out>
        __pyx_t_3 = 0x909a10 <_Py_NoneStruct>
        __pyx_t_4 = 0x0
        __pyx_t_5 = 0x0
        __pyx_t_6 = 0x0
        __pyx_t_7 = <optimized out>
        __pyx_t_8 = <optimized out>
        __pyx_t_9 = <optimized out>
        __pyx_t_10 = <optimized out>
        __pyx_t_11 = <optimized out>
        __pyx_t_12 = <optimized out>
        __pyx_lineno = 0
        __pyx_filename = 0x0
        __pyx_clineno = 0
#30 0x00007f5aa983fcce in __pyx_pf_7cypari2_3gen_8Gen_base_1224nfeltreduce (
    __pyx_v_nf=__pyx_v_nf@entry=0x7f52a9075360, __pyx_v_a=0x7f52a82f6a90,
    __pyx_v_id=0x7f52a9213a40) at cypari2/gen.c:117734
        __pyx_v__nf = <optimized out>
        __pyx_v__a = <optimized out>
        __pyx_v__id = <optimized out>
        __pyx_v__ret = <optimized out>
        __pyx_r = 0x0
        __pyx_t_1 = 0x0
        __pyx_t_2 = <optimized out>
        __pyx_t_3 = <optimized out>
        __pyx_lineno = 0
        __pyx_filename = 0x0
        __pyx_clineno = 0
#31 0x00007f5aa983ffba in __pyx_pw_7cypari2_3gen_8Gen_base_1225nfeltreduce (
    __pyx_v_nf=0x7f52a9075360, __pyx_args=0x7f52a82f2d00,
    __pyx_kwds=<optimized out>) at cypari2/gen.c:117703
        __pyx_v_a = <optimized out>
        __pyx_v_id = <optimized out>
        __pyx_lineno = 0
        __pyx_filename = 0x0
        __pyx_clineno = 0
        __pyx_r = 0x0
#32 0x00007f5ab3b1c508 in __Pyx_CyFunction_CallAsMethod (kw=0x0,
    args=0x7f52a82dd180, func=0x7f5ab00dbd40)
    at build/cythonized/sage/structure/element.c:39023
        argc = <optimized out>
        new_args = 0x7f52a82f2d00
        self = <optimized out>
        result = <optimized out>
        cyfunc = <optimized out>
#33 __Pyx_CyFunction_CallAsMethod (func=0x7f5ab00dbd40, args=0x7f52a82dd180,
    kw=0x0) at build/cythonized/sage/structure/element.c:39007
        result = <optimized out>
        cyfunc = 0x7f5ab00dbd40
        argc = <optimized out>
        new_args = <optimized out>
        self = <optimized out>
#34 0x00000000005f66f6 in _PyObject_MakeTpCall ()
No symbol table info available.
#35 0x000000000050ad17 in ?? ()
No symbol table info available.
#36 0x0000000000570296 in _PyEval_EvalFrameDefault ()
No symbol table info available.
#37 0x000000000050a4ce in ?? ()
No symbol table info available.
#38 0x0000000000570296 in _PyEval_EvalFrameDefault ()
No symbol table info available.
#39 0x000000000056951a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#40 0x00000000005f60b3 in _PyFunction_Vectorcall ()
No symbol table info available.
#41 0x000000000056b21e in _PyEval_EvalFrameDefault ()
No symbol table info available.
#42 0x0000000000500934 in ?? ()
No symbol table info available.
#43 0x00000000005ef48c in ?? ()
No symbol table info available.
#44 0x00000000005f665f in _PyObject_MakeTpCall ()
No symbol table info available.
#45 0x00000000005704c3 in _PyEval_EvalFrameDefault ()
No symbol table info available.
#46 0x000000000056951a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#47 0x000000000068be87 in PyEval_EvalCode ()
No symbol table info available.
#48 0x00000000005ffde4 in ?? ()
No symbol table info available.
#49 0x00000000005c49a0 in ?? ()
No symbol table info available.
#50 0x000000000056b21e in _PyEval_EvalFrameDefault ()
No symbol table info available.
#51 0x0000000000500528 in ?? ()
No symbol table info available.
#52 0x000000000056cc4a in _PyEval_EvalFrameDefault ()
No symbol table info available.
#53 0x0000000000500528 in ?? ()
No symbol table info available.
#54 0x000000000056cc4a in _PyEval_EvalFrameDefault ()
No symbol table info available.
#55 0x0000000000500528 in ?? ()
No symbol table info available.
#56 0x0000000000504186 in ?? ()
No symbol table info available.
#57 0x000000000056b3fe in _PyEval_EvalFrameDefault ()
No symbol table info available.
#58 0x00000000005f5ed6 in _PyFunction_Vectorcall ()
No symbol table info available.
#59 0x000000000056b21e in _PyEval_EvalFrameDefault ()
No symbol table info available.
#60 0x00000000005f5ed6 in _PyFunction_Vectorcall ()
No symbol table info available.
#61 0x000000000056b3fe in _PyEval_EvalFrameDefault ()
No symbol table info available.
#62 0x000000000056951a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#63 0x000000000050a640 in ?? ()
No symbol table info available.
#64 0x000000000056c3f8 in _PyEval_EvalFrameDefault ()
No symbol table info available.
#65 0x000000000056951a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#66 0x00000000005f60b3 in _PyFunction_Vectorcall ()
No symbol table info available.
#67 0x000000000056b3fe in _PyEval_EvalFrameDefault ()
No symbol table info available.
#68 0x000000000056951a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#69 0x00000000005f60b3 in _PyFunction_Vectorcall ()
No symbol table info available.
#70 0x000000000056b3fe in _PyEval_EvalFrameDefault ()
No symbol table info available.
#71 0x00000000005f5ed6 in _PyFunction_Vectorcall ()
No symbol table info available.
#72 0x000000000056b3fe in _PyEval_EvalFrameDefault ()
No symbol table info available.
#73 0x000000000056951a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#74 0x000000000068be87 in PyEval_EvalCode ()
No symbol table info available.
#75 0x000000000067b671 in ?? ()
No symbol table info available.
#76 0x000000000067b6ef in ?? ()
No symbol table info available.
#77 0x000000000067b7ab in PyRun_FileExFlags ()
No symbol table info available.
#78 0x000000000067d82e in PyRun_SimpleFileExFlags ()
No symbol table info available.
#79 0x00000000006b5682 in Py_RunMain ()
No symbol table info available.
#80 0x00000000006b5a0d in Py_BytesMain ()
No symbol table info available.
#81 0x00007f5ab62500b3 in __libc_start_main ()
   from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#82 0x00000000005f9ece in _start ()
No symbol table info available.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[Inferior 1 (process 1126795) detached]
Traceback (most recent call last):
  File "<string>", line 25, in <module>
ModuleNotFoundError: No module named 'Cython'
Error while executing Python code.
Saved trace to /home/masiao/.sage/crash_logs/crash_wu55fhq4.log
------------------------------------------------------------------------
Unhandled SIGABRT: An abort() occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------
Aborted (core dumped)