code will not compile , problem with stepper drivers

[wippy748s]

When I come to compile the code , it fails and i get this message , any ideas what I am doing wrong ?

thanks

.pio\libdeps\mks_robin_nano\TMCStepper\src\source\TMC2208Stepper.cpp: In member
function 'void TMC2208Stepper::beginSerial(uint32_t)':
.pio\libdeps\mks_robin_nano\TMCStepper\src\source\TMC2208Stepper.cpp:39:14: error: 'class SoftwareSerial' has no member named 'end'; did you mean 'read'?
SWSerial->end();
^~~
read
.pio\libdeps\mks_robin_nano\TMCStepper\src\source\TMC2208Stepper.cpp: In member
function 'void TMC2208Stepper::postReadCommunication()':
.pio\libdeps\mks_robin_nano\TMCStepper\src\source\TMC2208Stepper.cpp:182:14: error: 'class SoftwareSerial' has no member named 'end'; did you mean 'read'?
SWSerial->end();
^~~
read
Compiling .pio\build\mks_robin_nano\libd64\LiquidTWI2\LiquidTWI2.cpp.o
*** [.pio\build\mks_robin_nano\lib017\TMCStepper\source\TMC2208Stepper.cpp.o] Error 1
========================= [FAILED] Took 30.66 seconds =========================

Environment Status Duration

---

mks_robin_nano FAILED 00:00:30.664
==================== 1 failed, 0 succeeded in 00:00:30.664 ====================
The terminal process "C:\Users\nissa.platformio\penv\Scripts\platformio.exe 'run', '--environment', 'mks_robin_nano'" terminated with exit code: 1.

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