#2929 Flyte Console - ValueError: Generic Type typing.Union not supported currently in Flytekit Issue created by sakthi-tech4th Hi, I'm trying to launch a workflow in the Flyte Console (Sandbox Environment in a Windows Machine) and I'm getting the above mentioned error for a task that accept pandas DataFrames (2 data frames) and returns a DataFrame.

[1/1] currentAttempt done. Last Error: USER::Pod failed. No message received from kubernetes.

[adbrq7s7x2kbwln2k5df-n0-0] terminated with exit code (1). Reason [Error]. Message:  
a_worflows.py", line 211, in  
def process_data_frames(lc_df: pd.DataFrame=None, data_frame: pd.DataFrame=None)->pd.DataFrame:  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/task.py", line 209, in task  
return wrapper(_task_function)  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/task.py", line 193, in wrapper  
task_instance = TaskPlugins.find_pythontask_plugin(type(task_config))(  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/tracker.py", line 30, in *call*  
o = super(InstanceTrackingMeta, cls).*call*(*args, **kwargs)  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/python_function_task.py", line 118, in *init*  
super().*init*(  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/python_auto_container.py", line 72, in *init*  
super().*init*(  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/base_task.py", line 389, in *init*  
interface=transform_interface_to_typed_interface(interface),  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/interface.py", line 210, in transform_interface_to_typed_interface  
inputs_map = transform_variable_map(interface.inputs, input_descriptions)  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/interface.py", line 318, in transform_variable_map  
res[k] = transform_type(v, descriptions.get(k, k))  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/interface.py", line 332, in transform_type  
return _interface_models.Variable(type=TypeEngine.to_literal_type(x), description=description)  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/type_engine.py", line 611, in to_literal_type  
transformer = cls.get_transformer(python_type)  
File "/usr/local/lib/python3.9/site-packages/flytekit/core/type_engine.py", line 584, in get_transformer  
raise ValueError(f"Generic Type {python_type.*origin*} not supported currently in Flytekit.")  
ValueError: Generic Type typing.Union not supported currently in Flytekit.

the data frames has columns with strings, consequently the

dtypes

for these columns were

object

. Would it be possible, for some one to let me know what is the problem or if I'm missing something? Of if this because, I'm running it in a Windows machine? Thanks and Regards flyteorg/flyte