'NoneType' object is not callable

[axiomgraph]

Prompt executed in 0.01 seconds
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!!! Exception during processing !!! 'NoneType' object is not callable
Traceback (most recent call last):
File "C:\Users\Spec\Downloads\ComfyUI_windows_portable\ComfyUI\execution.py", line 347, in execute
output_data, output_ui, has_subgraph = get_output_data(obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Spec\Downloads\ComfyUI_windows_portable\ComfyUI\execution.py", line 222, in get_output_data
return_values = _map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Spec\Downloads\ComfyUI_windows_portable\ComfyUI\execution.py", line 194, in _map_node_over_list
process_inputs(input_dict, i)
File "C:\Users\Spec\Downloads\ComfyUI_windows_portable\ComfyUI\execution.py", line 183, in process_inputs
results.append(getattr(obj, func)(**inputs))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Spec\Downloads\ComfyUI_windows_portable\ComfyUI\custom_nodes\f-lite\f_lite\comfyui.py", line 89, in f_lite
image = self.pipe(
^^^^^^^^^^
TypeError: 'NoneType' object is not callable

[ivanprado]

@axiomgraph can you please elaborate more about in which conditions this happens? Where you able to generate anything? Did you try to change the model? Any other previous log error?