Crash issue on Nodemcu esp8266

[felangga]

I got this stack trace error crash log when running on nodemcu esp8266.
It said something about hardware serial.

stack>>>

ctx: cont
sp: 3ffffee0 end: 3fffffc0 offset: 0000
3ffffee0: feefeffe feefeffe feefeffe 00000100
3ffffef0: 000000fe 00000000 00000000 00000000
3fffff00: 00000000 00000000 00000000 00ff0000
3fffff10: 5ffffe00 5ffffe00 000a0d06 00000000
3fffff20: 00000002 00000002 3ffeee84 40202b22
3fffff30: 40100462 00000000 0000000e 40202b38
3fffff40: 40201ed8 3ffeee24 3ffeee84 40203019
3fffff50: 00000000 00000003 3ffeee24 402017dd
3fffff60: 00000000 0000000a 3ffeee84 3ffeeeec
3fffff70: 3fffdad0 3ffeee24 3ffeee84 402030c8
3fffff80: 3fffdad0 3ffeee24 3ffeee84 402013c0
3fffff90: feefeffe feefeffe feefeffe feefeffe
3fffffa0: feefeffe 00000000 3ffeeeac 40202770
3fffffb0: feefeffe feefeffe 3ffe84e4 40100d6d
<<<stack<<<