TTGO LoRa32 v1 tnn-abp.ino help

Very new at this.
Have my gateway all working on TTN, set up an app with a device and abp keys
I have the above device, which works with other sketches (https://randomnerdtutorials.com/ttgo-lora32-sx1276-arduino-ide/)
I have followed prereq for https://github.com/matthijskooijman/arduino-lmic and I am using the tnn-abp.ino from that repo, updating with my abp keys (that is the only change I have made to the file, is that right?)

Sketch compiles and uploads ok but keeps cycling through the below.
Searching through forums for an hour or so and thought I’d throw hands up and ask …
Pointers or ideas?

13:38:37.457 ->
13:38:37.457 -> rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
13:38:37.491 -> configsip: 0, SPIWP:0xee
13:38:37.491 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
13:38:37.491 -> mode:DIO, clock div:1
13:38:37.491 -> load:0x3fff0018,len:4
13:38:37.491 -> load:0x3fff001c,len:1044
13:38:37.491 -> load:0x40078000,len:8896
13:38:37.491 -> load:0x40080400,len:5816
13:38:37.491 -> entry 0x400806ac
13:38:37.659 -> Starting
13:38:37.659 -> Guru Meditation Error: Core 1 panic’ed (IllegalInstruction). Exception was unhandled.
13:38:37.659 -> Memory dump at 0x400d1828: ffffffff ffffffff ffffffff
13:38:37.659 -> Core 1 register dump:
13:38:37.659 -> PC : 0x400d182e PS : 0x00060130 A0 : 0x800d1888 A1 : 0x3ffb1ed0
13:38:37.693 -> A2 : 0x3ffc015c A3 : 0x000000ff A4 : 0x00000008 A5 : 0x0000ff00
13:38:37.693 -> A6 : 0x00ff0000 A7 : 0xff000000 A8 : 0x3f40108c A9 : 0x3ffb1eb0
13:38:37.693 -> A10 : 0x000000ff A11 : 0x00000000 A12 : 0x00000002 A13 : 0x0000ff00
13:38:37.693 -> A14 : 0x00ff0000 A15 : 0xff000000 SAR : 0x0000001a EXCCAUSE: 0x00000000
13:38:37.727 -> EXCVADDR: 0x00000000 LBEG : 0x400014fd LEND : 0x4000150d LCOUNT : 0xffffffff
13:38:37.727 ->
13:38:37.727 -> Backtrace: 0x400d182e:0x3ffb1ed0 0x400d1885:0x3ffb1ef0 0x400d3bb7:0x3ffb1f10 0x400d3bce:0x3ffb1f30 0x400d0f6d:0x3ffb1f50 0x400d5e13:0x3ffb1fb0 0x40088215:0x3ffb1fd0
13:38:37.727 ->
13:38:37.727 -> Rebooting…

Hi @paulbirch,

Those randomnerdstutorials deal with LoRa but not LoRaWAN.

Have a look here: Big ESP32 + SX127x topic part 3

Please first check the forum for existing relevant posts before opening a new topic.