LOG:  GUC (PGC_BOOL) externally_managed_configuration, boot_val=0, C-var=1
TRAP: failed Assert("check_GUC_init(hentry->gucvar)"), File: "../src/backend/utils/misc/guc.c", Line: 1556, PID: 13908
postgres(ExceptionalCondition+0x56)[0x55bedd56c551]
postgres(InitializeGUCOptions+0x8d)[0x55bedd5a1c82]
postgres(PostmasterMain+0x194)[0x55bedd171f8c]
postgres(main+0x393)[0x55bedcf9f1de]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea)[0x7f4eb6820d0a]
postgres(_start+0x2a)[0x55bedcb0d21a]