Crash during amount entry

[hurufu]

2021-03-15 20:02:16.013 D nexoid-cpp    scapi_Wait_For_Event ...
Exception in thread reqfrwdr:
Traceback (most recent call last):
  File "/usr/lib/python3.9/threading.py", line 954, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.9/threading.py", line 892, in run
    self._target(*self._args, **self._kwargs)
  File "/home/hurufu/nexo/nexoid/nexui-flask/nexui/__init__.py", line 104, in forward_ui_requests
panic: pthread_mutex_lock: Invalid argument
This message is indicative of a BUG.
Report this at https://github.com/nanomsg/nng/issues
    req = nexui.recv()
  File "/usr/lib/python3.9/site-packages/pynng/nng.py", line 454, in recv
/usr/lib/python3.9/site-packages/pynng/_nng.abi3.so(nni_panic+0x114) [0x7f553c1f7864]
/usr/lib/python3.9/site-packages/pynng/_nng.abi3.so(nni_aio_fini+0x1d) [0x7f553c1f111d]
/usr/lib/python3.9/site-packages/pynng/_nng.abi3.so(nni_aio_free+0x18) [0x7f553c1f1258]
/usr/lib/python3.9/site-packages/pynng/_nng.abi3.so(nng_recvmsg+0x92) [0x7f553c1e0632]
/usr/lib/python3.9/site-packages/pynng/_nng.abi3.so(nng_recv+0x37) [0x7f553c1e06b7]
/usr/lib/python3.9/site-packages/pynng/_nng.abi3.so(+0x66bd7) [0x7f553c1d7bd7]
/usr/lib/libpython3.9.so.1.0(+0x14cc12) [0x7f553ee70c12]
/usr/lib/libpython3.9.so.1.0(_PyObject_MakeTpCall+0x30d) [0x7f553ee56f6d]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x507a) [0x7f553ee52cea]
/usr/lib/libpython3.9.so.1.0(+0x128b0d) [0x7f553ee4cb0d]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e) [0x7f553ee5ec4e]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x602) [0x7f553ee4e272]
/usr/lib/libpython3.9.so.1.0(+0x12932f) [0x7f553ee4d32f]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e) [0x7f553ee5ec4e]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x3ca) [0x7f553ee4e03a]
/usr/lib/libpython3.9.so.1.0(+0x12932f) [0x7f553ee4d32f]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e) [0x7f553ee5ec4e]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x4a11) [0x7f553ee52681]
/usr/lib/libpython3.9.so.1.0(+0x128b0d) [0x7f553ee4cb0d]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e) [0x7f553ee5ec4e]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x2ca9) [0x7f553ee50919]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x1aa) [0x7f553ee5eaaa]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x602) [0x7f553ee4e272]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x1aa) [0x7f553ee5eaaa]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x602) [0x7f553ee4e272]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x1aa) [0x7f553ee5eaaa]
/usr/lib/libpython3.9.so.1.0(+0x14b334) [0x7f553ee6f334]
/usr/lib/libpython3.9.so.1.0(+0x239006) [0x7f553ef5d006]
/usr/lib/libpython3.9.so.1.0(+0x214a64) [0x7f553ef38a64]
/usr/lib/libpthread.so.0(+0x9299) [0x7f553eb3f299]
/usr/lib/libc.so.6(clone+0x43) [0x7f553ec56053]

[hurufu]

Looks like a problem with nng library.