ESPnow sender sketch fails with ESP8266 boards update 3.0.0

i have a sender sketch for a NodeMCU 12E.
with version 2.7.4 it's working alright.
with the new version 3.0.0 it's not.
it's throwing this message:

--------------- CUT HERE FOR EXCEPTION DECODER ---------------

Exception (0):
epc1=0x40201181 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000


ctx: cont
sp: 3ffffdf0 end: 3fffffc0 offset: 0190
3fffff80: 3fffdad0 00000384 3ffee552 40201140
3fffff90: 402010ec 00000000 3ffee6e4 402011e2
3fffffa0: 3fffdad0 00000000 3ffee6e4 40202018
3fffffb0: feefeffe feefeffe 3ffe85e8 40100c65

--------------- CUT HERE FOR EXCEPTION DECODER ---------------

the receiver sketch doesn't show this problem.


What does the Exception Decoder have to say about it ?

thanks for the hint. i didn't know the exception decoder is a downloadable tool.

to me, the message of the decoder says there is something wrong in the updated esp_core.

remember, the sketch works with the version 2.7.4.

Exception 0: Illegal instruction PC: 0x40201181 EXCVADDR: 0x00000000 Decoding stack results
0x40201140: receiving() at C:\Users\Gebruiker\Documents\ArduinoData\packages\esp8266\hardware\esp8266\3.0.0\cores\esp8266/HardwareSerial.h line 166
0x402010ec: setup() at C:\Users\Gebruiker\Desktop\GOSSE-NIEKE\sketchbook\nodemcu\espnow\MA_Esp_zend/Csetup.ino line 20
0x40202018: loop_wrapper() at C:\Users\Gebruiker\Documents\ArduinoData\packages\esp8266\hardware\esp8266\3.0.0\cores\esp8266*core_esp8266_main.cpp* line 201


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