IndexError: index 1 is out of bounds for axis 0 with size 1

[0jeetparmar0]

INFO:donkeycar.parts.controller:button: a_button state: 0
INFO:donkeycar.parts.controller:button: a_button state: 1
INFO:donkeycar.parts.controller:new mode: local
INFO:donkeycar.parts.controller:button: a_button state: 0
2024-10-09 10:07:01.494657: I tensorflow/stream_executor/cuda/cuda_dnn.cc:380] Loaded cuDNN version 8000
2024-10-09 10:07:09.198789: I tensorflow/stream_executor/platform/default/dso_loader.cc:53] Successfully opened dynamic library libcublas.so.10
Traceback (most recent call last):
File "/home/nano/projects/donkeycar/donkeycar/vehicle.py", line 155, in start
self.update_parts()
File "/home/nano/projects/donkeycar/donkeycar/vehicle.py", line 209, in update_parts
outputs = p.run(*inputs)
File "/home/nano/projects/donkeycar/donkeycar/parts/keras.py", line 110, in run
return self.inference(norm_arr, np_other_array)
File "/home/nano/projects/donkeycar/donkeycar/parts/keras.py", line 123, in inference
return self.interpreter_to_output(out)
File "/home/nano/projects/donkeycar/donkeycar/parts/keras.py", line 335, in interpreter_to_output
throttle = interpreter_out[1]
IndexError: index 1 is out of bounds for axis 0 with size 1
INFO:donkeycar.vehicle:Shutting down vehicle and its parts...

using DC==4.5.1
waveshare jetracer pro ai kit
model trained using custom code not default keras.