Traceback (most recent call last):


 "/opt/anaconda3/bin/papermill", line 10, in <module>

sys.exit(papermill())


 "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 764, in __call__

return self.main(*args, **kwargs)


 "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 717, in main

rv = self.invoke(ctx)


 "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 956, in invoke

return ctx.invoke(self.callback, **ctx.params)


 "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 555, in invoke

return callback(*args, **kwargs)


 "/opt/anaconda3/lib/python3.7/site-packages/papermill/cli.py", line 165, in papermill

cwd=cwd,


 "/opt/anaconda3/lib/python3.7/site-packages/papermill/execute.py", line 93, in execute_notebook

start_timeout=start_timeout,


 "/opt/anaconda3/lib/python3.7/site-packages/papermill/engines.py", line 57, in execute_notebook_with_engine

return self.get_engine(engine_name).execute_notebook(nb, kernel_name, **kwargs)


 "/opt/anaconda3/lib/python3.7/site-packages/papermill/engines.py", line 309, in execute_notebook

nb = cls.execute_managed_notebook(nb_man, kernel_name, log_output=log_output, **kwargs)


 "/opt/anaconda3/lib/python3.7/site-packages/papermill/engines.py", line 365, in execute_managed_notebook

preprocessor.preprocess(nb_man, kwargs)


 "/opt/anaconda3/lib/python3.7/site-packages/papermill/preprocess.py", line 24, in preprocess

self.set_widgets_metadata()
AttributeError: 'PapermillExecutePreprocessor' object has no attribute 'set_widgets_metadata'

Traceback (most recent call last):


 "core.py", line 13, in <module>

model.summary()


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/_converters_entry.py", line 183, in convert

**kwargs


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/converter.py", line 129, in mil_convert

ConverterRegistry, **kwargs)


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/converter.py", line 171, in mil_convert_to_proto

prog = frontend_converter(model, **kwargs)


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/converter.py", line 75, in __call__

return tf2_loader.load()


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/frontend/tensorflow/load.py", line 80, in load

program = self._program_from_tf_ssa()


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/frontend/tensorflow2/load.py", line 165, in _program_from_tf_ssa

tf_pass(self._tf_ssa)


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/frontend/tensorflow2/tf_graph_pass/rewrite_control_flow_functions.py", line 567, in rewrite_control_flow_functions

_rewrite_while_loop_functions(tf_ssa, fn)


 "/home/farhan/.local/lib/python3.6/site-packages/coremltools/converters/mil/frontend/tensorflow2/tf_graph_pass/rewrite_control_flow_functions.py", line 501, in _rewrite_while_loop_functions

n for n in o_original.input if str(n).startswith(while_name)
AttributeError: 'NoneType' object has no attribute 'input'
