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: 18498
postgres(ExceptionalCondition+0x56)[0x55ddf0dbc3f1]
postgres(InitializeGUCOptions+0x8d)[0x55ddf0df206f]
postgres(PostmasterMain+0x194)[0x55ddf09bc8be]
postgres(main+0x393)[0x55ddf07e6619]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea)[0x7fa6e6b1fd0a]
postgres(_start+0x2a)[0x55ddf034621a]