Soft WDT reset Exception(4) su ESP8266-01

Questo è il log copiato dal serial monitor con parte dello Stack dump:

14:53:02.986 -> Update time from NTP Server
14:53:02.986 -> Connecting to WiFi....
14:53:04.342 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
14:53:04.342 -> 
14:53:04.342 -> Soft WDT reset
14:53:04.342 -> 
14:53:04.342 -> Exception (4):
14:53:04.342 -> epc1=0x40106ac7 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000
14:53:04.342 -> 
14:53:04.342 -> >>>stack>>>
14:53:04.342 -> 
14:53:04.342 -> ctx: sys
14:53:04.342 -> sp: 3fffecb0 end: 3fffffb0 offset: 0160
14:53:04.342 -> 3fffee10:  3ffeebb8 0001db4c 000000d9 40202f15  
14:53:04.342 -> 3fffee20:  0001db4c 000000fa 0001db2b 40202f8a  
14:53:04.342 -> 3fffee30:  00000000 0001db2b 03958106 022569bc  
14:53:04.342 -> 3fffee40:  4023bb4f fffffffc 00000001 3ffe8640  
14:53:04.342 -> 3fffee50:  3ffeeae8 0001db2b 000000fa 40203574  
14:53:04.342 -> 3fffee60:  3ffeeae8 3ffeeb1c 3ffeeb50 402011c8  
14:53:04.342 -> 3fffee70:  68121d2c 00000000 3e9f7e25 3fffd9d0  
14:53:04.342 -> 3fffee80:  00000000 00000000 00000000 00000003  
14:53:04.342 -> 3fffee90:  3ffeeab8 00000000 0000000e 40201311  
14:53:04.342 -> 3fffeea0:  40201f2c 3ffeeadc 00000000 40201f11  
14:53:04.342 -> 3fffeeb0:  3ffeeaf4 00000001 00000000 401002bc  
14:53:04.342 -> 3fffeec0:  3fffeee0 00000001 00000002 401002bc  
14:53:04.342 -> 3fffeed0:  00000035 00000003 0000007d 0000001e  
14:53:04.342 -> 3fffeee0:  00000001 3ffee600 3ffeeae8 40201d8d  
14:53:04.342 -> 3fffeef0:  3fffef10 3ffeeaf4 402340f7 60000600  
14:53:04.342 -> 3fffef00:  3ffeeaf4 3ffee600 3ffeeae8 40201dd4  
14:53:04.342 -> 3fffef10:  402013c0 feefeffe 402058c4 402058bc  
14:53:04.342 -> 3fffef20:  00000002 3ffeeb08 3ffee600 07217f8d  
14:53:04.342 -> 3fffef30:  07217f8d 3ffee600 3ffeeb08 402390b1  
14:53:04.342 -> 3fffef40:  402390f6 3fffdab0 00000000 3fffdcb0  
14:53:04.342 -> 3fffef50:  3ffee618 3fffdad0 3ffeebe0 40202d5a