Received signal 11 SEGV_MAPERR 000000000030

==== C stack trace ===============================

 [0x55b2023882a7]
 [0x7f044e972980]
 [0x7f044e969fd0]
 [0x55b201949b84]
 [0x55b20194b6da]
 [0x55b201cf7206]
 [0x0ad7000b4778]
[end of stack trace]
Segmentation fault (core dumped)
